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Feature Code

This is the Feature Code page list. You can click the title to browse the detail information.
  • A: ADM1 (first-order administrative division: a primary administrative division of a country, such as a state in the United States)
  • A: ADM1H (historical first-order administrative division: a former first-order administrative division)
  • A: ADM2 (second-order administrative division: a subdivision of a first-order administrative division)
  • A: ADM2H (historical second-order administrative division: a former second-order administrative division)
  • A: ADM3 (third-order administrative division: a subdivision of a second-order administrative division)
  • A: ADM3H (historical third-order administrative division: a former third-order administrative division)
  • A: ADM4 (fourth-order administrative division: a subdivision of a third-order administrative division)
  • A: ADM4H (historical fourth-order administrative division: a former fourth-order administrative division)
  • A: ADM5 (fifth-order administrative division: a subdivision of a fourth-order administrative division)
  • A: ADMD (administrative division: an administrative division of a country, undifferentiated as to administrative level)
  • A: ADMDH (historical administrative division : a former administrative division of a political entity, undifferentiated as to administrative level)
  • A: LTER (leased area: a tract of land leased to another country, usually for military installations)
  • A: PCL (political entity: )
  • A: PCLD (dependent political entity: )
  • A: PCLF (freely associated state: )
  • A: PCLH (historical political entity: a former political entity)
  • A: PCLI (independent political entity: )
  • A: PCLIX (section of independent political entity: )
  • A: PCLS (semi-independent political entity: )
  • A: PRSH (parish: an ecclesiastical district)
  • A: TERR (territory: )
  • A: ZN (zone: )
  • A: ZNB (buffer zone: a zone recognized as a buffer between two nations in which military presence is minimal or absent)
  • H: AIRS (seaplane landing area: a place on a waterbody where floatplanes land and take off)
  • H: ANCH (anchorage: an area where vessels may anchor)
  • H: BAY (bay: a coastal indentation between two capes or headlands, larger than a cove but smaller than a gulf)
  • H: BAYS (bays: coastal indentations between two capes or headlands, larger than a cove but smaller than a gulf)
  • H: BGHT (bight(s): an open body of water forming a slight recession in a coastline)
  • H: BNK (bank(s): an elevation, typically located on a shelf, over which the depth of water is relatively shallow but sufficient for most surface navigation)
  • H: BNKR (stream bank: a sloping margin of a stream channel which normally confines the stream to its channel on land)
  • H: BNKX (section of bank: )
  • H: BOG (bog(s): a wetland characterized by peat forming sphagnum moss, sedge, and other acid-water plants)
  • H: CAPG (icecap: a dome-shaped mass of glacial ice covering an area of mountain summits or other high lands; smaller than an ice sheet)
  • H: CHN (channel: the deepest part of a stream, bay, lagoon, or strait, through which the main current flows)
  • H: CHNL (lake channel(s): that part of a lake having water deep enough for navigation between islands, shoals, etc.)
  • H: CHNM (marine channel: that part of a body of water deep enough for navigation through an area otherwise not suitable)
  • H: CHNN (navigation channel: a buoyed channel of sufficient depth for the safe navigation of vessels)
  • H: CNFL (confluence: a place where two or more streams or intermittent streams flow together)
  • H: CNL (canal: an artificial watercourse)
  • H: CNLA (aqueduct: a conduit used to carry water)
  • H: CNLB (canal bend: a conspicuously curved or bent section of a canal)
  • H: CNLD (drainage canal: an artificial waterway carrying water away from a wetland or from drainage ditches)
  • H: CNLI (irrigation canal: a canal which serves as a main conduit for irrigation water)
  • H: CNLN (navigation canal(s): a watercourse constructed for navigation of vessels)
  • H: CNLQ (abandoned canal: )
  • H: CNLSB (underground irrigation canal(s): a gently inclined underground tunnel bringing water for irrigation from aquifers)
  • H: CNLX (section of canal: )
  • H: COVE (cove(s): a small coastal indentation, smaller than a bay)
  • H: CRKT (tidal creek(s): a meandering channel in a coastal wetland subject to bi-directional tidal currents)
  • H: CRNT (current: a horizontal flow of water in a given direction with uniform velocity)
  • H: CUTF (cutoff: a channel formed as a result of a stream cutting through a meander neck)
  • H: DCK (dock(s): a waterway between two piers, or cut into the land for the berthing of ships)
  • H: DCKB (docking basin: a part of a harbor where ships dock)
  • H: DOMG (icecap dome: a comparatively elevated area on an icecap)
  • H: DPRG (icecap depression: a comparatively depressed area on an icecap)
  • H: DTCH (ditch: a small artificial watercourse dug for draining or irrigating the land)
  • H: DTCHD (drainage ditch: a ditch which serves to drain the land)
  • H: DTCHI (irrigation ditch: a ditch which serves to distribute irrigation water)
  • H: DTCHM (ditch mouth(s): an area where a drainage ditch enters a lagoon, lake or bay)
  • H: ESTY (estuary: a funnel-shaped stream mouth or embayment where fresh water mixes with sea water under tidal influences)
  • H: FISH (fishing area: a fishing ground, bank or area where fishermen go to catch fish)
  • H: FJD (fjord: a long, narrow, steep-walled, deep-water arm of the sea at high latitudes, usually along mountainous coasts)
  • H: FJDS (fjords: long, narrow, steep-walled, deep-water arms of the sea at high latitudes, usually along mountainous coasts)
  • H: FLLS (waterfall(s): a perpendicular or very steep descent of the water of a stream)
  • H: FLLSX (section of waterfall(s): )
  • H: FLTM (mud flat(s): a relatively level area of mud either between high and low tide lines, or subject to flooding)
  • H: FLTT (tidal flat(s): a large flat area of mud or sand attached to the shore and alternately covered and uncovered by the tide)
  • H: GLCR (glacier(s): a mass of ice, usually at high latitudes or high elevations, with sufficient thickness to flow away from the source area in lobes, tongues, or masses)
  • H: GULF (gulf: a large recess in the coastline, larger than a bay)
  • H: GYSR (geyser: a type of hot spring with intermittent eruptions of jets of hot water and steam)
  • H: HBR (harbor(s): a haven or space of deep water so sheltered by the adjacent land as to afford a safe anchorage for ships)
  • H: HBRX (section of harbor: )
  • H: INLT (inlet: a narrow waterway extending into the land, or connecting a bay or lagoon with a larger body of water)
  • H: INLTQ (former inlet: an inlet which has been filled in, or blocked by deposits)
  • H: LBED (lake bed(s): a dried up or drained area of a former lake)
  • H: LGN (lagoon: a shallow coastal waterbody, completely or partly separated from a larger body of water by a barrier island, coral reef or other depositional feature)
  • H: LGNS (lagoons: shallow coastal waterbodies, completely or partly separated from a larger body of water by a barrier island, coral reef or other depositional feature)
  • H: LGNX (section of lagoon: )
  • H: LK (lake: a large inland body of standing water)
  • H: LKC (crater lake: a lake in a crater or caldera)
  • H: LKI (intermittent lake: )
  • H: LKN (salt lake: an inland body of salt water with no outlet)
  • H: LKNI (intermittent salt lake: )
  • H: LKO (oxbow lake: a crescent-shaped lake commonly found adjacent to meandering streams)
  • H: LKOI (intermittent oxbow lake: )
  • H: LKS (lakes: large inland bodies of standing water)
  • H: LKSB (underground lake: a standing body of water in a cave)
  • H: LKSC (crater lakes: lakes in a crater or caldera)
  • H: LKSI (intermittent lakes: )
  • H: LKSN (salt lakes: inland bodies of salt water with no outlet)
  • H: LKSNI (intermittent salt lakes: )
  • H: LKX (section of lake: )
  • H: MFGN (salt evaporation ponds: diked salt ponds used in the production of solar evaporated salt)
  • H: MGV (mangrove swamp: a tropical tidal mud flat characterized by mangrove vegetation)
  • H: MOOR (moor(s): an area of open ground overlaid with wet peaty soils)
  • H: MRSH (marsh(es): a wetland dominated by grass-like vegetation)
  • H: MRSHN (salt marsh: a flat area, subject to periodic salt water inundation, dominated by grassy salt-tolerant plants)
  • H: NRWS (narrows: a navigable narrow part of a bay, strait, river, etc.)
  • H: OCN (ocean: one of the major divisions of the vast expanse of salt water covering part of the earth)
  • H: OVF (overfalls: an area of breaking waves caused by the meeting of currents or by waves moving against the current)
  • H: PND (pond: a small standing waterbody)
  • H: PNDI (intermittent pond: )
  • H: PNDN (salt pond: a small standing body of salt water often in a marsh or swamp, usually along a seacoast)
  • H: PNDNI (intermittent salt pond(s): )
  • H: PNDS (ponds: small standing waterbodies)
  • H: PNDSF (fishponds: ponds or enclosures in which fish are kept or raised)
  • H: PNDSI (intermittent ponds: )
  • H: PNDSN (salt ponds: small standing bodies of salt water often in a marsh or swamp, usually along a seacoast)
  • H: POOL (pool(s): a small and comparatively still, deep part of a larger body of water such as a stream or harbor; or a small body of standing water)
  • H: POOLI (intermittent pool: )
  • H: RCH (reach: a straight section of a navigable stream or channel between two bends)
  • H: RDGG (icecap ridge: a linear elevation on an icecap)
  • H: RDST (roadstead: an open anchorage affording less protection than a harbor)
  • H: RF (reef(s): a surface-navigation hazard composed of consolidated material)
  • H: RFC (coral reef(s): a surface-navigation hazard composed of coral)
  • H: RFX (section of reef: )
  • H: RPDS (rapids: a turbulent section of a stream associated with a steep, irregular stream bed)
  • H: RSV (reservoir(s): an artificial pond or lake)
  • H: RSVI (intermittent reservoir: )
  • H: RSVT (water tank: a contained pool or tank of water at, below, or above ground level)
  • H: RVN (ravine(s): a small, narrow, deep, steep-sided stream channel, smaller than a gorge)
  • H: SBKH (sabkha(s): a salt flat or salt encrusted plain subject to periodic inundation from flooding or high tides)
  • H: SD (sound: a long arm of the sea forming a channel between the mainland and an island or islands; or connecting two larger bodies of water)
  • H: SEA (sea: a large body of salt water more or less confined by continuous land or chains of islands forming a subdivision of an ocean)
  • H: SHOL (shoal(s): a surface-navigation hazard composed of unconsolidated material)
  • H: SILL (sill: the low part of an underwater gap or saddle separating basins, including a similar feature at the mouth of a fjord)
  • H: SPNG (spring(s): a place where ground water flows naturally out of the ground)
  • H: SPNS (sulphur spring(s): a place where sulphur ground water flows naturally out of the ground)
  • H: SPNT (hot spring(s): a place where hot ground water flows naturally out of the ground)
  • H: STM (stream: a body of running water moving to a lower level in a channel on land)
  • H: STMA (anabranch: a diverging branch flowing out of a main stream and rejoining it downstream)
  • H: STMB (stream bend: a conspicuously curved or bent segment of a stream)
  • H: STMC (canalized stream: a stream that has been substantially ditched, diked, or straightened)
  • H: STMD (distributary(-ies): a branch which flows away from the main stream, as in a delta or irrigation canal)
  • H: STMH (headwaters: the source and upper part of a stream, including the upper drainage basin)
  • H: STMI (intermittent stream: )
  • H: STMIX (section of intermittent stream: )
  • H: STMM (stream mouth(s): a place where a stream discharges into a lagoon, lake, or the sea)
  • H: STMQ (abandoned watercourse: a former stream or distributary no longer carrying flowing water, but still evident due to lakes, wetland, topographic or vegetation patterns)
  • H: STMS (streams: bodies of running water moving to a lower level in a channel on land)
  • H: STMSB (lost river: a surface stream that disappears into an underground channel, or dries up in an arid area)
  • H: STMX (section of stream: )
  • H: STRT (strait: a relatively narrow waterway, usually narrower and less extensive than a sound, connecting two larger bodies of water)
  • H: SWMP (swamp: a wetland dominated by tree vegetation)
  • H: SYSI (irrigation system: a network of ditches and one or more of the following elements: water supply, reservoir, canal, pump, well, drain, etc.)
  • H: TNLC (canal tunnel: a tunnel through which a canal passes)
  • H: WAD (wadi: a valley or ravine, bounded by relatively steep banks, which in the rainy season becomes a watercourse; found primarily in North Africa and the Middle East)
  • H: WADB (wadi bend: a conspicuously curved or bent segment of a wadi)
  • H: WADJ (wadi junction: a place where two or more wadies join)
  • H: WADM (wadi mouth: the lower terminus of a wadi where it widens into an adjoining floodplain, depression, or waterbody)
  • H: WADS (wadies: valleys or ravines, bounded by relatively steep banks, which in the rainy season become watercourses; found primarily in North Africa and the Middle East)
  • H: WADX (section of wadi: )
  • H: WHRL (whirlpool: a turbulent, rotating movement of water in a stream)
  • H: WLL (well: a cylindrical hole, pit, or tunnel drilled or dug down to a depth from which water, oil, or gas can be pumped or brought to the surface)
  • H: WLLQ (abandoned well: )
  • H: WLLS (wells: cylindrical holes, pits, or tunnels drilled or dug down to a depth from which water, oil, or gas can be pumped or brought to the surface)
  • H: WTLD (wetland: an area subject to inundation, usually characterized by bog, marsh, or swamp vegetation)
  • H: WTLDI (intermittent wetland: )
  • H: WTRC (watercourse: a natural, well-defined channel produced by flowing water, or an artificial channel designed to carry flowing water)
  • H: WTRH (waterhole(s): a natural hole, hollow, or small depression that contains water, used by man and animals, especially in arid areas)
  • L: AGRC (agricultural colony: a tract of land set aside for agricultural settlement)
  • L: AMUS (amusement park: Amusement Park are theme parks, adventure parks offering entertainment, similar to funfairs but with a fix location)
  • L: AREA (area: a tract of land without homogeneous character or boundaries)
  • L: BSND (drainage basin: an area drained by a stream)
  • L: BSNP (petroleum basin: an area underlain by an oil-rich structural basin)
  • L: BTL (battlefield: a site of a land battle of historical importance)
  • L: CLG (clearing: an area in a forest with trees removed)
  • L: CMN (common: a park or pasture for community use)
  • L: CNS (concession area: a lease of land by a government for economic development, e.g., mining, forestry)
  • L: COLF (coalfield: a region in which coal deposits of possible economic value occur)
  • L: CONT (continent: continent: Europe, Africa, Asia, North America, South America, Oceania, Antarctica)
  • L: CST (coast: a zone of variable width straddling the shoreline)
  • L: CTRB (business center: a place where a number of businesses are located)
  • L: DEVH (housing development: a tract of land on which many houses of similar design are built according to a development plan)
  • L: FLD (field(s): an open as opposed to wooded area)
  • L: FLDI (irrigated field(s): a tract of level or terraced land which is irrigated)
  • L: GASF (gasfield: an area containing a subterranean store of natural gas of economic value)
  • L: GRAZ (grazing area: an area of grasses and shrubs used for grazing)
  • L: GVL (gravel area: an area covered with gravel)
  • L: INDS (industrial area: an area characterized by industrial activity)
  • L: LAND (arctic land: a tract of land in the Arctic)
  • L: LCTY (locality: a minor area or place of unspecified or mixed character and indefinite boundaries)
  • L: MILB (military base: a place used by an army or other armed service for storing arms and supplies, and for accommodating and training troops, a base from which operations can be initiated)
  • L: MNA (mining area: an area of mine sites where minerals and ores are extracted)
  • L: MVA (maneuver area: a tract of land where military field exercises are carried out)
  • L: NVB (naval base: an area used to store supplies, provide barracks for troops and naval personnel, a port for naval vessels, and from which operations are initiated)
  • L: OAS (oasis(-es): an area in a desert made productive by the availability of water)
  • L: OILF (oilfield: an area containing a subterranean store of petroleum of economic value)
  • L: PEAT (peat cutting area: an area where peat is harvested)
  • L: PRK (park: an area, often of forested land, maintained as a place of beauty, or for recreation)
  • L: PRT (port: a place provided with terminal and transfer facilities for loading and discharging waterborne cargo or passengers, usually located in a harbor)
  • L: QCKS (quicksand: an area where loose sand with water moving through it may become unstable when heavy objects are placed at the surface, causing them to sink)
  • L: RES (reserve: a tract of public land reserved for future use or restricted as to use)
  • L: RESA (agricultural reserve: a tract of land reserved for agricultural reclamation and/or development)
  • L: RESF (forest reserve: a forested area set aside for preservation or controlled use)
  • L: RESH (hunting reserve: a tract of land used primarily for hunting)
  • L: RESN (nature reserve: an area reserved for the maintenance of a natural habitat)
  • L: RESP (palm tree reserve: an area of palm trees where use is controlled)
  • L: RESV (reservation: a tract of land set aside for aboriginal, tribal, or native populations)
  • L: RESW (wildlife reserve: a tract of public land reserved for the preservation of wildlife)
  • L: RGN (region: an area distinguished by one or more observable physical or cultural characteristics)
  • L: RGNE (economic region: a region of a country established for economic development or for statistical purposes)
  • L: RGNH (historical region: a former historic area distinguished by one or more observable physical or cultural characteristics)
  • L: RGNL (lake region: a tract of land distinguished by numerous lakes)
  • L: RNGA (artillery range: a tract of land used for artillery firing practice)
  • L: SALT (salt area: a shallow basin or flat where salt accumulates after periodic inundation)
  • L: SNOW (snowfield: an area of permanent snow and ice forming the accumulation area of a glacier)
  • L: TRB (tribal area: a tract of land used by nomadic or other tribes)
  • P: PPL (populated place: a city, town, village, or other agglomeration of buildings where people live and work)
  • P: PPLA (seat of a first-order administrative division: seat of a first-order administrative division (PPLC takes precedence over PPLA))
  • P: PPLA2 (seat of a second-order administrative division: )
  • P: PPLA3 (seat of a third-order administrative division: )
  • P: PPLA4 (seat of a fourth-order administrative division: )
  • P: PPLC (capital of a political entity: )
  • P: PPLCH (historical capital of a political entity: a former capital of a political entity)
  • P: PPLF (farm village: a populated place where the population is largely engaged in agricultural activities)
  • P: PPLG (seat of government of a political entity: )
  • P: PPLH (historical populated place: a populated place that no longer exists)
  • P: PPLL (populated locality: an area similar to a locality but with a small group of dwellings or other buildings)
  • P: PPLQ (abandoned populated place: )
  • P: PPLR (religious populated place: a populated place whose population is largely engaged in religious occupations)
  • P: PPLS (populated places: cities, towns, villages, or other agglomerations of buildings where people live and work)
  • P: PPLW (destroyed populated place: a village, town or city destroyed by a natural disaster, or by war)
  • P: PPLX (section of populated place: )
  • P: STLMT (israeli settlement: )
  • R: CSWY (causeway: a raised roadway across wet ground or shallow water)
  • R: OILP (oil pipeline: a pipeline used for transporting oil)
  • R: PRMN (promenade: a place for public walking, usually along a beach front)
  • R: PTGE (portage: a place where boats, goods, etc., are carried overland between navigable waters)
  • R: RD (road: an open way with improved surface for transportation of animals, people and vehicles)
  • R: RDA (ancient road: the remains of a road used by ancient cultures)
  • R: RDB (road bend: a conspicuously curved or bent section of a road)
  • R: RDCUT (road cut: an excavation cut through a hill or ridge for a road)
  • R: RDJCT (road junction: a place where two or more roads join)
  • R: RJCT (railroad junction: a place where two or more railroad tracks join)
  • R: RR (railroad: a permanent twin steel-rail track on which freight and passenger cars move long distances)
  • R: RRQ (abandoned railroad: )
  • R: RTE (caravan route: the route taken by caravans)
  • R: RYD (railroad yard: a system of tracks used for the making up of trains, and switching and storing freight cars)
  • R: ST (street: a paved urban thoroughfare)
  • R: STKR (stock route: a route taken by livestock herds)
  • R: TNL (tunnel: a subterranean passageway for transportation)
  • R: TNLN (natural tunnel: a cave that is open at both ends)
  • R: TNLRD (road tunnel: a tunnel through which a road passes)
  • R: TNLRR (railroad tunnel: a tunnel through which a railroad passes)
  • R: TNLS (tunnels: subterranean passageways for transportation)
  • R: TRL (trail: a path, track, or route used by pedestrians, animals, or off-road vehicles)
  • S: ADMF (administrative facility: a government building)
  • S: AGRF (agricultural facility: a building and/or tract of land used for improving agriculture)
  • S: AIRB (airbase: an area used to store supplies, provide barracks for air force personnel, hangars and runways for aircraft, and from which operations are initiated)
  • S: AIRF (airfield: a place on land where aircraft land and take off; no facilities provided for the commercial handling of passengers and cargo)
  • S: AIRH (heliport: a place where helicopters land and take off)
  • S: AIRP (airport: a place where aircraft regularly land and take off, with runways, navigational aids, and major facilities for the commercial handling of passengers and cargo)
  • S: AIRQ (abandoned airfield: )
  • S: AMTH (amphitheater: an oval or circular structure with rising tiers of seats about a stage or open space)
  • S: ANS (ancient site: a place where archeological remains, old structures, or cultural artifacts are located)
  • S: AQC (aquaculture facility: facility or area for the cultivation of aquatic animals and plants, especially fish, shellfish, and seaweed, in natural or controlled marine or freshwater environments; underwater agriculture)
  • S: ARCH (arch: a natural or man-made structure in the form of an arch)
  • S: ASTR (astronomical station: a point on the earth whose position has been determined by observations of celestial bodies)
  • S: ASYL (asylum: a facility where the insane are cared for and protected)
  • S: ATHF (athletic field: a tract of land used for playing team sports, and athletic track and field events)
  • S: ATM (automatic teller machine: An unattended electronic machine in a public place, connected to a data system and related equipment and activated by a bank customer to obtain cash withdrawals and other banking services.)
  • S: BANK (bank: A business establishment in which money is kept for saving or commercial purposes or is invested, supplied for loans, or exchanged.)
  • S: BCN (beacon: a fixed artificial navigation mark)
  • S: BDG (bridge: a structure erected across an obstacle such as a stream, road, etc., in order to carry roads, railroads, and pedestrians across)
  • S: BDGQ (ruined bridge: a destroyed or decayed bridge which is no longer functional)
  • S: BLDG (building(s): a structure built for permanent use, as a house, factory, etc.)
  • S: BLDO (office building: commercial building where business and/or services are conducted)
  • S: BP (boundary marker: a fixture marking a point along a boundary)
  • S: BRKS (barracks: a building for lodging military personnel)
  • S: BRKW (breakwater: a structure erected to break the force of waves at the entrance to a harbor or port)
  • S: BSTN (baling station: a facility for baling agricultural products)
  • S: BTYD (boatyard: a waterside facility for servicing, repairing, and building small vessels)
  • S: BUR (burial cave(s): a cave used for human burials)
  • S: BUSTN (bus station: a facility comprising ticket office, platforms, etc. for loading and unloading passengers)
  • S: BUSTP (bus stop: a place lacking station facilities)
  • S: CARN (cairn: a heap of stones erected as a landmark or for other purposes)
  • S: CAVE (cave(s): an underground passageway or chamber, or cavity on the side of a cliff)
  • S: CH (church: a building for public Christian worship)
  • S: CMP (camp(s): a site occupied by tents, huts, or other shelters for temporary use)
  • S: CMPL (logging camp: a camp used by loggers)
  • S: CMPLA (labor camp: a camp used by migrant or temporary laborers)
  • S: CMPMN (mining camp: a camp used by miners)
  • S: CMPO (oil camp: a camp used by oilfield workers)
  • S: CMPQ (abandoned camp: )
  • S: CMPRF (refugee camp: a camp used by refugees)
  • S: CMTY (cemetery: a burial place or ground)
  • S: COMC (communication center: a facility, including buildings, antennae, towers and electronic equipment for receiving and transmitting information)
  • S: CRRL (corral(s): a pen or enclosure for confining or capturing animals)
  • S: CSNO (casino: a building used for entertainment, especially gambling)
  • S: CSTL (castle: a large fortified building or set of buildings)
  • S: CSTM (customs house: a building in a port where customs and duties are paid, and where vessels are entered and cleared)
  • S: CTHSE (courthouse: a building in which courts of law are held)
  • S: CTRA (atomic center: a facility where atomic research is carried out)
  • S: CTRCM (community center: a facility for community recreation and other activities)
  • S: CTRF (facility center: a place where more than one facility is situated)
  • S: CTRM (medical center: a complex of health care buildings including two or more of the following: hospital, medical school, clinic, pharmacy, doctor's offices, etc.)
  • S: CTRR (religious center: a facility where more than one religious activity is carried out, e.g., retreat, school, monastery, worship)
  • S: CTRS (space center: a facility for launching, tracking, or controlling satellites and space vehicles)
  • S: CVNT (convent: a building where a community of nuns lives in seclusion)
  • S: DAM (dam: a barrier constructed across a stream to impound water)
  • S: DAMQ (ruined dam: a destroyed or decayed dam which is no longer functional)
  • S: DAMSB (sub-surface dam: a dam put down to bedrock in a sand river)
  • S: DARY (dairy: a facility for the processing, sale and distribution of milk or milk products)
  • S: DCKD (dry dock: a dock providing support for a vessel, and means for removing the water so that the bottom of the vessel can be exposed)
  • S: DCKY (dockyard: a facility for servicing, building, or repairing ships)
  • S: DIKE (dike: an earth or stone embankment usually constructed for flood or stream control)
  • S: DIP (diplomatic facility: office, residence, or facility of a foreign government, which may include an embassy, consulate, chancery, office of charge d'affaires, or other diplomatic, economic, military, or cultural mission)
  • S: DPOF (fuel depot: an area where fuel is stored)
  • S: EST (estate(s): a large commercialized agricultural landholding with associated buildings and other facilities)
  • S: ESTO (oil palm plantation: an estate specializing in the cultivation of oil palm trees)
  • S: ESTR (rubber plantation: an estate which specializes in growing and tapping rubber trees)
  • S: ESTSG (sugar plantation: an estate that specializes in growing sugar cane)
  • S: ESTT (tea plantation: an estate which specializes in growing tea bushes)
  • S: ESTX (section of estate: )
  • S: FCL (facility: a building or buildings housing a center, institute, foundation, hospital, prison, mission, courthouse, etc.)
  • S: FNDY (foundry: a building or works where metal casting is carried out)
  • S: FRM (farm: a tract of land with associated buildings devoted to agriculture)
  • S: FRMQ (abandoned farm: )
  • S: FRMS (farms: tracts of land with associated buildings devoted to agriculture)
  • S: FRMT (farmstead: the buildings and adjacent service areas of a farm)
  • S: FT (fort: a defensive structure or earthworks)
  • S: FY (ferry: a boat or other floating conveyance and terminal facilities regularly used to transport people and vehicles across a waterbody)
  • S: GATE (gate: a controlled access entrance or exit)
  • S: GDN (garden(s): an enclosure for displaying selected plant or animal life)
  • S: GHAT (ghat: a set of steps leading to a river, which are of religious significance, and at their base is usually a platform for bathing)
  • S: GHSE (guest house: a house used to provide lodging for paying guests)
  • S: GOSP (gas-oil separator plant: a facility for separating gas from oil)
  • S: GOVL (local government office: a facility housing local governmental offices, usually a city, town, or village hall)
  • S: GRVE (grave: a burial site)
  • S: HERM (hermitage: a secluded residence, usually for religious sects)
  • S: HLT (halting place: a place where caravans stop for rest)
  • S: HMSD (homestead: a residence, owner's or manager's, on a sheep or cattle station, woolshed, outcamp, or Aboriginal outstation, specific to Australia and New Zealand)
  • S: HSE (house(s): a building used as a human habitation)
  • S: HSEC (country house: a large house, mansion, or chateau, on a large estate)
  • S: HSP (hospital: a building in which sick or injured, especially those confined to bed, are medically treated)
  • S: HSPC (clinic: a medical facility associated with a hospital for outpatients)
  • S: HSPD (dispensary: a building where medical or dental aid is dispensed)
  • S: HSPL (leprosarium: an asylum or hospital for lepers)
  • S: HSTS (historical site: a place of historical importance)
  • S: HTL (hotel: a building providing lodging and/or meals for the public)
  • S: HUT (hut: a small primitive house)
  • S: HUTS (huts: small primitive houses)
  • S: INSM (military installation: a facility for use of and control by armed forces)
  • S: ITTR (research institute: a facility where research is carried out)
  • S: JTY (jetty: a structure built out into the water at a river mouth or harbor entrance to regulate currents and silting)
  • S: LDNG (landing: a place where boats receive or discharge passengers and freight, but lacking most port facilities)
  • S: LEPC (leper colony: a settled area inhabited by lepers in relative isolation)
  • S: LIBR (library: A place in which information resources such as books are kept for reading, reference, or lending.)
  • S: LNDF (landfill: a place for trash and garbage disposal in which the waste is buried between layers of earth to build up low-lying land)
  • S: LOCK (lock(s): a basin in a waterway with gates at each end by means of which vessels are passed from one water level to another)
  • S: LTHSE (lighthouse: a distinctive structure exhibiting a major navigation light)
  • S: MALL (mall: A large, often enclosed shopping complex containing various stores, businesses, and restaurants usually accessible by common passageways.)
  • S: MAR (marina: a harbor facility for small boats, yachts, etc.)
  • S: MFG (factory: one or more buildings where goods are manufactured, processed or fabricated)
  • S: MFGB (brewery: one or more buildings where beer is brewed)
  • S: MFGC (cannery: a building where food items are canned)
  • S: MFGCU (copper works: a facility for processing copper ore)
  • S: MFGLM (limekiln: a furnace in which limestone is reduced to lime)
  • S: MFGM (munitions plant: a factory where ammunition is made)
  • S: MFGPH (phosphate works: a facility for producing fertilizer)
  • S: MFGQ (abandoned factory: )
  • S: MFGSG (sugar refinery: a facility for converting raw sugar into refined sugar)
  • S: MKT (market: a place where goods are bought and sold at regular intervals)
  • S: ML (mill(s): a building housing machines for transforming, shaping, finishing, grinding, or extracting products)
  • S: MLM (ore treatment plant: a facility for improving the metal content of ore by concentration)
  • S: MLO (olive oil mill: a mill where oil is extracted from olives)
  • S: MLSG (sugar mill: a facility where sugar cane is processed into raw sugar)
  • S: MLSGQ (former sugar mill: a sugar mill no longer used as a sugar mill)
  • S: MLSW (sawmill: a mill where logs or lumber are sawn to specified shapes and sizes)
  • S: MLWND (windmill: a mill or water pump powered by wind)
  • S: MLWTR (water mill: a mill powered by running water)
  • S: MN (mine(s): a site where mineral ores are extracted from the ground by excavating surface pits and subterranean passages)
  • S: MNAU (gold mine(s): a mine where gold ore, or alluvial gold is extracted)
  • S: MNC (coal mine(s): a mine where coal is extracted)
  • S: MNCR (chrome mine(s): a mine where chrome ore is extracted)
  • S: MNCU (copper mine(s): a mine where copper ore is extracted)
  • S: MNFE (iron mine(s): a mine where iron ore is extracted)
  • S: MNMT (monument: a commemorative structure or statue)
  • S: MNN (salt mine(s): a mine from which salt is extracted)
  • S: MNQ (abandoned mine: )
  • S: MNQR (quarry(-ies): a surface mine where building stone or gravel and sand, etc. are extracted)
  • S: MOLE (mole: a massive structure of masonry or large stones serving as a pier or breakwater)
  • S: MSQE (mosque: a building for public Islamic worship)
  • S: MSSN (mission: a place characterized by dwellings, school, church, hospital and other facilities operated by a religious group for the purpose of providing charitable services and to propagate religion)
  • S: MSSNQ (abandoned mission: )
  • S: MSTY (monastery: a building and grounds where a community of monks lives in seclusion)
  • S: MTRO (metro station: metro station (Underground, Tube, or Metro))
  • S: MUS (museum: a building where objects of permanent interest in one or more of the arts and sciences are preserved and exhibited)
  • S: NOV (novitiate: a religious house or school where novices are trained)
  • S: NSY (nursery(-ies): a place where plants are propagated for transplanting or grafting)
  • S: OBPT (observation point: a wildlife or scenic observation point)
  • S: OBS (observatory: a facility equipped for observation of atmospheric or space phenomena)
  • S: OBSR (radio observatory: a facility equipped with an array of antennae for receiving radio waves from space)
  • S: OILJ (oil pipeline junction: a section of an oil pipeline where two or more pipes join together)
  • S: OILQ (abandoned oil well: )
  • S: OILR (oil refinery: a facility for converting crude oil into refined petroleum products)
  • S: OILT (tank farm: a tract of land occupied by large, cylindrical, metal tanks in which oil or liquid petrochemicals are stored)
  • S: OILW (oil well: a well from which oil may be pumped)
  • S: OPRA (opera house: A theater designed chiefly for the performance of operas.)
  • S: PAL (palace: a large stately house, often a royal or presidential residence)
  • S: PGDA (pagoda: a tower-like storied structure, usually a Buddhist shrine)
  • S: PIER (pier: a structure built out into navigable water on piles providing berthing for ships and recreation)
  • S: PKLT (parking lot: an area used for parking vehicles)
  • S: PMPO (oil pumping station: a facility for pumping oil through a pipeline)
  • S: PMPW (water pumping station: a facility for pumping water from a major well or through a pipeline)
  • S: PO (post office: a public building in which mail is received, sorted and distributed)
  • S: PP (police post: a building in which police are stationed)
  • S: PPQ (abandoned police post: )
  • S: PRKGT (park gate: a controlled access to a park)
  • S: PRKHQ (park headquarters: a park administrative facility)
  • S: PRN (prison: a facility for confining prisoners)
  • S: PRNJ (reformatory: a facility for confining, training, and reforming young law offenders)
  • S: PRNQ (abandoned prison: )
  • S: PS (power station: a facility for generating electric power)
  • S: PSH (hydroelectric power station: a building where electricity is generated from water power)
  • S: PSTB (border post: a post or station at an international boundary for the regulation of movement of people and goods)
  • S: PSTC (customs post: a building at an international boundary where customs and duties are paid on goods)
  • S: PSTP (patrol post: a post from which patrols are sent out)
  • S: PYR (pyramid: an ancient massive structure of square ground plan with four triangular faces meeting at a point and used for enclosing tombs)
  • S: PYRS (pyramids: ancient massive structures of square ground plan with four triangular faces meeting at a point and used for enclosing tombs)
  • S: QUAY (quay: a structure of solid construction along a shore or bank which provides berthing for ships and which generally provides cargo handling facilities)
  • S: RDCR (traffic circle: a road junction formed around a central circle about which traffic moves in one direction only)
  • S: RECG (golf course: a recreation field where golf is played)
  • S: RECR (racetrack: a track where races are held)
  • S: REST (restaurant: A place where meals are served to the public)
  • S: RET (store: a building where goods and/or services are offered for sale)
  • S: RHSE (resthouse: a structure maintained for the rest and shelter of travelers)
  • S: RKRY (rookery: a breeding place of a colony of birds or seals)
  • S: RLG (religious site: an ancient site of significant religious importance)
  • S: RLGR (retreat: a place of temporary seclusion, especially for religious groups)
  • S: RNCH (ranch(es): a large farm specializing in extensive grazing of livestock)
  • S: RSD (railroad siding: a short track parallel to and joining the main track)
  • S: RSGNL (railroad signal: a signal at the entrance of a particular section of track governing the movement of trains)
  • S: RSRT (resort: a specialized facility for vacation, health, or participation sports activities)
  • S: RSTN (railroad station: a facility comprising ticket office, platforms, etc. for loading and unloading train passengers and freight)
  • S: RSTNQ (abandoned railroad station: )
  • S: RSTP (railroad stop: a place lacking station facilities where trains stop to pick up and unload passengers and freight)
  • S: RSTPQ (abandoned railroad stop: )
  • S: RUIN (ruin(s): a destroyed or decayed structure which is no longer functional)
  • S: SCH (school: building(s) where instruction in one or more branches of knowledge takes place)
  • S: SCHA (agricultural school: a school with a curriculum focused on agriculture)
  • S: SCHC (college: the grounds and buildings of an institution of higher learning)
  • S: SCHL (language school: Language Schools & Institutions)
  • S: SCHM (military school: a school at which military science forms the core of the curriculum)
  • S: SCHN (maritime school: a school at which maritime sciences form the core of the curriculum)
  • S: SCHT (technical school: post-secondary school with a specifically technical or vocational curriculum)
  • S: SECP (State Exam Prep Centre: state exam preparation centres)
  • S: SHPF (sheepfold: a fence or wall enclosure for sheep and other small herd animals)
  • S: SHRN (shrine: a structure or place memorializing a person or religious concept)
  • S: SHSE (storehouse: a building for storing goods, especially provisions)
  • S: SLCE (sluice: a conduit or passage for carrying off surplus water from a waterbody, usually regulated by means of a sluice gate)
  • S: SNTR (sanatorium: a facility where victims of physical or mental disorders are treated)
  • S: SPA (spa: a resort area usually developed around a medicinal spring)
  • S: SPLY (spillway: a passage or outlet through which surplus water flows over, around or through a dam)
  • S: SQR (square: a broad, open, public area near the center of a town or city)
  • S: STBL (stable: a building for the shelter and feeding of farm animals, especially horses)
  • S: STDM (stadium: a structure with an enclosure for athletic games with tiers of seats for spectators)
  • S: STNB (scientific research base: a scientific facility used as a base from which research is carried out or monitored)
  • S: STNC (coast guard station: a facility from which the coast is guarded by armed vessels)
  • S: STNE (experiment station: a facility for carrying out experiments)
  • S: STNF (forest station: a collection of buildings and facilities for carrying out forest management)
  • S: STNI (inspection station: a station at which vehicles, goods, and people are inspected)
  • S: STNM (meteorological station: a station at which weather elements are recorded)
  • S: STNR (radio station: a facility for producing and transmitting information by radio waves)
  • S: STNS (satellite station: a facility for tracking and communicating with orbiting satellites)
  • S: STNW (whaling station: a facility for butchering whales and processing train oil)
  • S: STPS (steps: stones or slabs placed for ease in ascending or descending a steep slope)
  • S: SWT (sewage treatment plant: facility for the processing of sewage and/or wastewater)
  • S: THTR (theater: A building, room, or outdoor structure for the presentation of plays, films, or other dramatic performances)
  • S: TMB (tomb(s): a structure for interring bodies)
  • S: TMPL (temple(s): an edifice dedicated to religious worship)
  • S: TNKD (cattle dipping tank: a small artificial pond used for immersing cattle in chemically treated water for disease control)
  • S: TOWR (tower: a high conspicuous structure, typically much higher than its diameter)
  • S: TRANT (transit terminal: facilities for the handling of vehicular freight and passengers)
  • S: TRIG (triangulation station: a point on the earth whose position has been determined by triangulation)
  • S: TRMO (oil pipeline terminal: a tank farm or loading facility at the end of an oil pipeline)
  • S: TWO (temp work office: Temporary Work Offices)
  • S: UNIP (university prep school: University Preparation Schools & Institutions)
  • S: UNIV (university: An institution for higher learning with teaching and research facilities constituting a graduate school and professional schools that award master's degrees and doctorates and an undergraduate division that awards bachelor's degrees.)
  • S: USGE (united states government establishment: a facility operated by the United States Government in Panama)
  • S: VETF (veterinary facility: a building or camp at which veterinary services are available)
  • S: WALL (wall: a thick masonry structure, usually enclosing a field or building, or forming the side of a structure)
  • S: WALLA (ancient wall: the remains of a linear defensive stone structure)
  • S: WEIR (weir(s): a small dam in a stream, designed to raise the water level or to divert stream flow through a desired channel)
  • S: WHRF (wharf(-ves): a structure of open rather than solid construction along a shore or a bank which provides berthing for ships and cargo-handling facilities)
  • S: WRCK (wreck: the site of the remains of a wrecked vessel)
  • S: WTRW (waterworks: a facility for supplying potable water through a water source and a system of pumps and filtration beds)
  • S: ZNF (free trade zone: an area, usually a section of a port, where goods may be received and shipped free of customs duty and of most customs regulations)
  • S: ZOO (zoo: a zoological garden or park where wild animals are kept for exhibition)
  • T: ASPH (asphalt lake: a small basin containing naturally occurring asphalt)
  • T: ATOL (atoll(s): a ring-shaped coral reef which has closely spaced islands on it encircling a lagoon)
  • T: BAR (bar: a shallow ridge or mound of coarse unconsolidated material in a stream channel, at the mouth of a stream, estuary, or lagoon and in the wave-break zone along coasts)
  • T: BCH (beach: a shore zone of coarse unconsolidated sediment that extends from the low-water line to the highest reach of storm waves)
  • T: BCHS (beaches: a shore zone of coarse unconsolidated sediment that extends from the low-water line to the highest reach of storm waves)
  • T: BDLD (badlands: an area characterized by a maze of very closely spaced, deep, narrow, steep-sided ravines, and sharp crests and pinnacles)
  • T: BLDR (boulder field: a high altitude or high latitude bare, flat area covered with large angular rocks)
  • T: BLHL (blowhole(s): a hole in coastal rock through which sea water is forced by a rising tide or waves and spurted through an outlet into the air)
  • T: BLOW (blowout(s): a small depression in sandy terrain, caused by wind erosion)
  • T: BNCH (bench: a long, narrow bedrock platform bounded by steeper slopes above and below, usually overlooking a waterbody)
  • T: BUTE (butte(s): a small, isolated, usually flat-topped hill with steep sides)
  • T: CAPE (cape: a land area, more prominent than a point, projecting into the sea and marking a notable change in coastal direction)
  • T: CFT (cleft(s): a deep narrow slot, notch, or groove in a coastal cliff)
  • T: CLDA (caldera: a depression measuring kilometers across formed by the collapse of a volcanic mountain)
  • T: CLF (cliff(s): a high, steep to perpendicular slope overlooking a waterbody or lower area)
  • T: CNYN (canyon: a deep, narrow valley with steep sides cutting into a plateau or mountainous area)
  • T: CONE (cone(s): a conical landform composed of mud or volcanic material)
  • T: CRDR (corridor: a strip or area of land having significance as an access way)
  • T: CRQ (cirque: a bowl-like hollow partially surrounded by cliffs or steep slopes at the head of a glaciated valley)
  • T: CRQS (cirques: bowl-like hollows partially surrounded by cliffs or steep slopes at the head of a glaciated valley)
  • T: CRTR (crater(s): a generally circular saucer or bowl-shaped depression caused by volcanic or meteorite explosive action)
  • T: CUET (cuesta(s): an asymmetric ridge formed on tilted strata)
  • T: DLTA (delta: a flat plain formed by alluvial deposits at the mouth of a stream)
  • T: DPR (depression(s): a low area surrounded by higher land and usually characterized by interior drainage)
  • T: DSRT (desert: a large area with little or no vegetation due to extreme environmental conditions)
  • T: DUNE (dune(s): a wave form, ridge or star shape feature composed of sand)
  • T: DVD (divide: a line separating adjacent drainage basins)
  • T: ERG (sandy desert: an extensive tract of shifting sand and sand dunes)
  • T: FAN (fan(s): a fan-shaped wedge of coarse alluvium with apex merging with a mountain stream bed and the fan spreading out at a low angle slope onto an adjacent plain)
  • T: FORD (ford: a shallow part of a stream which can be crossed on foot or by land vehicle)
  • T: FSR (fissure: a crack associated with volcanism)
  • T: GAP (gap: a low place in a ridge, not used for transportation)
  • T: GRGE (gorge(s): a short, narrow, steep-sided section of a stream valley)
  • T: HDLD (headland: a high projection of land extending into a large body of water beyond the line of the coast)
  • T: HLL (hill: a rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m)
  • T: HLLS (hills: rounded elevations of limited extent rising above the surrounding land with local relief of less than 300m)
  • T: HMCK (hammock(s): a patch of ground, distinct from and slightly above the surrounding plain or wetland. Often occurs in groups)
  • T: HMDA (rock desert: a relatively sand-free, high bedrock plateau in a hot desert, with or without a gravel veneer)
  • T: INTF (interfluve: a relatively undissected upland between adjacent stream valleys)
  • T: ISL (island: a tract of land, smaller than a continent, surrounded by water at high water)
  • T: ISLET (islet: small island, bigger than rock, smaller than island.)
  • T: ISLF (artificial island: an island created by landfill or diking and filling in a wetland, bay, or lagoon)
  • T: ISLM (mangrove island: a mangrove swamp surrounded by a waterbody)
  • T: ISLS (islands: tracts of land, smaller than a continent, surrounded by water at high water)
  • T: ISLT (land-tied island: a coastal island connected to the mainland by barrier beaches, levees or dikes)
  • T: ISLX (section of island: )
  • T: ISTH (isthmus: a narrow strip of land connecting two larger land masses and bordered by water)
  • T: KRST (karst area: a distinctive landscape developed on soluble rock such as limestone characterized by sinkholes, caves, disappearing streams, and underground drainage)
  • T: LAVA (lava area: an area of solidified lava)
  • T: LEV (levee: a natural low embankment bordering a distributary or meandering stream; often built up artificially to control floods)
  • T: MESA (mesa(s): a flat-topped, isolated elevation with steep slopes on all sides, less extensive than a plateau)
  • T: MND (mound(s): a low, isolated, rounded hill)
  • T: MRN (moraine: a mound, ridge, or other accumulation of glacial till)
  • T: MT (mountain: an elevation standing high above the surrounding area with small summit area, steep slopes and local relief of 300m or more)
  • T: MTS (mountains: a mountain range or a group of mountains or high ridges)
  • T: NKM (meander neck: a narrow strip of land between the two limbs of a meander loop at its narrowest point)
  • T: NTK (nunatak: a rock or mountain peak protruding through glacial ice)
  • T: NTKS (nunataks: rocks or mountain peaks protruding through glacial ice)
  • T: PAN (pan: a near-level shallow, natural depression or basin, usually containing an intermittent lake, pond, or pool)
  • T: PANS (pans: a near-level shallow, natural depression or basin, usually containing an intermittent lake, pond, or pool)
  • T: PASS (pass: a break in a mountain range or other high obstruction, used for transportation from one side to the other [See also gap])
  • T: PEN (peninsula: an elongate area of land projecting into a body of water and nearly surrounded by water)
  • T: PENX (section of peninsula: )
  • T: PK (peak: a pointed elevation atop a mountain, ridge, or other hypsographic feature)
  • T: PKS (peaks: pointed elevations atop a mountain, ridge, or other hypsographic features)
  • T: PLAT (plateau: an elevated plain with steep slopes on one or more sides, and often with incised streams)
  • T: PLATX (section of plateau: )
  • T: PLDR (polder: an area reclaimed from the sea by diking and draining)
  • T: PLN (plain(s): an extensive area of comparatively level to gently undulating land, lacking surface irregularities, and usually adjacent to a higher area)
  • T: PLNX (section of plain: )
  • T: PROM (promontory(-ies): a bluff or prominent hill overlooking or projecting into a lowland)
  • T: PT (point: a tapering piece of land projecting into a body of water, less prominent than a cape)
  • T: PTS (points: tapering pieces of land projecting into a body of water, less prominent than a cape)
  • T: RDGB (beach ridge: a ridge of sand just inland and parallel to the beach, usually in series)
  • T: RDGE (ridge(s): a long narrow elevation with steep sides, and a more or less continuous crest)
  • T: REG (stony desert: a desert plain characterized by a surface veneer of gravel and stones)
  • T: RK (rock: a conspicuous, isolated rocky mass)
  • T: RKFL (rockfall: an irregular mass of fallen rock at the base of a cliff or steep slope)
  • T: RKS (rocks: conspicuous, isolated rocky masses)
  • T: SAND (sand area: a tract of land covered with sand)
  • T: SBED (dry stream bed: a channel formerly containing the water of a stream)
  • T: SCRP (escarpment: a long line of cliffs or steep slopes separating level surfaces above and below)
  • T: SDL (saddle: a broad, open pass crossing a ridge or between hills or mountains)
  • T: SHOR (shore: a narrow zone bordering a waterbody which covers and uncovers at high and low water, respectively)
  • T: SINK (sinkhole: a small crater-shape depression in a karst area)
  • T: SLID (slide: a mound of earth material, at the base of a slope and the associated scoured area)
  • T: SLP (slope(s): a surface with a relatively uniform slope angle)
  • T: SPIT (spit: a narrow, straight or curved continuation of a beach into a waterbody)
  • T: SPUR (spur(s): a subordinate ridge projecting outward from a hill, mountain or other elevation)
  • T: TAL (talus slope: a steep concave slope formed by an accumulation of loose rock fragments at the base of a cliff or steep slope)
  • T: TRGD (interdune trough(s): a long wind-swept trough between parallel longitudinal dunes)
  • T: TRR (terrace: a long, narrow alluvial platform bounded by steeper slopes above and below, usually overlooking a waterbody)
  • T: UPLD (upland: an extensive interior region of high land with low to moderate surface relief)
  • T: VAL (valley: an elongated depression usually traversed by a stream)
  • T: VALG (hanging valley: a valley the floor of which is notably higher than the valley or shore to which it leads; most common in areas that have been glaciated)
  • T: VALS (valleys: elongated depressions usually traversed by a stream)
  • T: VALX (section of valley: )
  • T: VLC (volcano: a conical elevation composed of volcanic materials with a crater at the top)
  • U: APNU (apron: a gentle slope, with a generally smooth surface, particularly found around groups of islands and seamounts)
  • U: ARCU (arch: a low bulge around the southeastern end of the island of Hawaii)
  • U: ARRU (arrugado: an area of subdued corrugations off Baja California)
  • U: BDLU (borderland: a region adjacent to a continent, normally occupied by or bordering a shelf, that is highly irregular with depths well in excess of those typical of a shelf)
  • U: BKSU (banks: elevations, typically located on a shelf, over which the depth of water is relatively shallow but sufficient for safe surface navigation)
  • U: BNKU (bank: an elevation, typically located on a shelf, over which the depth of water is relatively shallow but sufficient for safe surface navigation)
  • U: BSNU (basin: a depression more or less equidimensional in plan and of variable extent)
  • U: CDAU (cordillera: an entire mountain system including the subordinate ranges, interior plateaus, and basins)
  • U: CNSU (canyons: relatively narrow, deep depressions with steep sides, the bottom of which generally has a continuous slope)
  • U: CNYU (canyon: a relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope)
  • U: CRSU (continental rise: a gentle slope rising from oceanic depths towards the foot of a continental slope)
  • U: DEPU (deep: a localized deep area within the confines of a larger feature, such as a trough, basin or trench)
  • U: EDGU (shelf edge: a line along which there is a marked increase of slope at the outer margin of a continental shelf or island shelf)
  • U: ESCU (escarpment (or scarp): an elongated and comparatively steep slope separating flat or gently sloping areas)
  • U: FANU (fan: a relatively smooth feature normally sloping away from the lower termination of a canyon or canyon system)
  • U: FLTU (flat: a small level or nearly level area)
  • U: FRZU (fracture zone: an extensive linear zone of irregular topography of the sea floor, characterized by steep-sided or asymmetrical ridges, troughs, or escarpments)
  • U: FURU (furrow: a closed, linear, narrow, shallow depression)
  • U: GAPU (gap: a narrow break in a ridge or rise)
  • U: GLYU (gully: a small valley-like feature)
  • U: HLLU (hill: an elevation rising generally less than 500 meters)
  • U: HLSU (hills: elevations rising generally less than 500 meters)
  • U: HOLU (hole: a small depression of the sea floor)
  • U: KNLU (knoll: an elevation rising generally more than 500 meters and less than 1,000 meters and of limited extent across the summit)
  • U: KNSU (knolls: elevations rising generally more than 500 meters and less than 1,000 meters and of limited extent across the summits)
  • U: LDGU (ledge: a rocky projection or outcrop, commonly linear and near shore)
  • U: LEVU (levee: an embankment bordering a canyon, valley, or seachannel)
  • U: MESU (mesa: an isolated, extensive, flat-topped elevation on the shelf, with relatively steep sides)
  • U: MNDU (mound: a low, isolated, rounded hill)
  • U: MOTU (moat: an annular depression that may not be continuous, located at the base of many seamounts, islands, and other isolated elevations)
  • U: MTU (mountain: a well-delineated subdivision of a large and complex positive feature)
  • U: PKSU (peaks: prominent elevations, part of a larger feature, either pointed or of very limited extent across the summit)
  • U: PKU (peak: a prominent elevation, part of a larger feature, either pointed or of very limited extent across the summit)
  • U: PLNU (plain: a flat, gently sloping or nearly level region)
  • U: PLTU (plateau: a comparatively flat-topped feature of considerable extent, dropping off abruptly on one or more sides)
  • U: PNLU (pinnacle: a high tower or spire-shaped pillar of rock or coral, alone or cresting a summit)
  • U: PRVU (province: a region identifiable by a group of similar physiographic features whose characteristics are markedly in contrast with surrounding areas)
  • U: RDGU (ridge: a long narrow elevation with steep sides)
  • U: RDSU (ridges: long narrow elevations with steep sides)
  • U: RFSU (reefs: surface-navigation hazards composed of consolidated material)
  • U: RFU (reef: a surface-navigation hazard composed of consolidated material)
  • U: RISU (rise: a broad elevation that rises gently, and generally smoothly, from the sea floor)
  • U: SCNU (seachannel: a continuously sloping, elongated depression commonly found in fans or plains and customarily bordered by levees on one or two sides)
  • U: SCSU (seachannels: continuously sloping, elongated depressions commonly found in fans or plains and customarily bordered by levees on one or two sides)
  • U: SDLU (saddle: a low part, resembling in shape a saddle, in a ridge or between contiguous seamounts)
  • U: SHFU (shelf: a zone adjacent to a continent (or around an island) that extends from the low water line to a depth at which there is usually a marked increase of slope towards oceanic depths)
  • U: SHLU (shoal: a surface-navigation hazard composed of unconsolidated material)
  • U: SHSU (shoals: hazards to surface navigation composed of unconsolidated material)
  • U: SHVU (shelf valley: a valley on the shelf, generally the shoreward extension of a canyon)
  • U: SILU (sill: the low part of a gap or saddle separating basins)
  • U: SLPU (slope: the slope seaward from the shelf edge to the beginning of a continental rise or the point where there is a general reduction in slope)
  • U: SMSU (seamounts: elevations rising generally more than 1,000 meters and of limited extent across the summit)
  • U: SMU (seamount: an elevation rising generally more than 1,000 meters and of limited extent across the summit)
  • U: SPRU (spur: a subordinate elevation, ridge, or rise projecting outward from a larger feature)
  • U: TERU (terrace: a relatively flat horizontal or gently inclined surface, sometimes long and narrow, which is bounded by a steeper ascending slope on one side and by a steep descending slope on the opposite side)
  • U: TMSU (tablemounts (or guyots): seamounts having a comparatively smooth, flat top)
  • U: TMTU (tablemount (or guyot): a seamount having a comparatively smooth, flat top)
  • U: TNGU (tongue: an elongate (tongue-like) extension of a flat sea floor into an adjacent higher feature)
  • U: TRGU (trough: a long depression of the sea floor characteristically flat bottomed and steep sided, and normally shallower than a trench)
  • U: TRNU (trench: a long, narrow, characteristically very deep and asymmetrical depression of the sea floor, with relatively steep sides)
  • U: VALU (valley: a relatively shallow, wide depression, the bottom of which usually has a continuous gradient)
  • U: VLSU (valleys: a relatively shallow, wide depression, the bottom of which usually has a continuous gradient)
  • V: BUSH (bush(es): a small clump of conspicuous bushes in an otherwise bare area)
  • V: CULT (cultivated area: an area under cultivation)
  • V: FRST (forest(s): an area dominated by tree vegetation)
  • V: FRSTF (fossilized forest: a forest fossilized by geologic processes and now exposed at the earth's surface)
  • V: GRSLD (grassland: an area dominated by grass vegetation)
  • V: GRVC (coconut grove: a planting of coconut trees)
  • V: GRVO (olive grove: a planting of olive trees)
  • V: GRVP (palm grove: a planting of palm trees)
  • V: GRVPN (pine grove: a planting of pine trees)
  • V: HTH (heath: an upland moor or sandy area dominated by low shrubby vegetation including heather)
  • V: MDW (meadow: a small, poorly drained area dominated by grassy vegetation)
  • V: OCH (orchard(s): a planting of fruit or nut trees)
  • V: SCRB (scrubland: an area of low trees, bushes, and shrubs stunted by some environmental limitation)
  • V: TREE (tree(s): a conspicuous tree used as a landmark)
  • V: TUND (tundra: a marshy, treeless, high latitude plain, dominated by mosses, lichens, and low shrub vegetation under permafrost conditions)
  • V: VIN (vineyard: a planting of grapevines)
  • V: VINS (vineyards: plantings of grapevines)
  • V: ll (not available: )