ADL Preferred Term submarine canyons capitol buildings A narrow natural passage or contracted strait connecting two bodies of water where no flow can be determined. [USGS Circ 1048]. A narrow channel opening into the sea or a large estuary, esp. in E. USA. [Monkhouse & Small: Dictionary of the Natural Environment] guts volcanoes oases drumlins An elongated hill or ridge of glacial drift. [Amer. Heritage Dictionary] earthquake features faults A fracture in the Earth's crust accompanied by a displacement of one side of the fracture with respect to the other. [UGSG Circ 1048] folds (geologic) fracture zones moraines An accumulation of earth and stones carried and deposited by a glacier. [USGS Circ 1048] cemeteries An area of land for burying the dead with two or more graves. [USGS Circ 1048] shrublands Areas covered with low-growing or stunted perennial vegetation and usually not mixed with trees. [USGS Circ 1048] jungles Denotes generally impenetrable tropical forests with dense tangled undergrowth of grasses, vines, shrubs, and trees. [AAT] rain forests massifs mesas A flat-topped elevation with steep sides. [Amer. Heritage Dictionary] landmarks craters regions camps reserves A tract of land set aside for a specific use. canals Manmade waterway used by watercraft or for drainage, irrigation, mining, or water power. tunnels An underground or underwater passage. [USGS Circ 1048] windmills A mill or other machine that runs on the energy generated by a wheel of adjustable blades or flats rotated by the wind. [USGS Circ 1048] First-order division of a nation. [USGS Circ 1048] countries, 1st order divisions An open way for passage of vehicles. [USGS Circ 1048] roadways adits (mine sites) A nearly horizontal passage from the surface in a mine. [WWWebster Dictionary] anchorages anclajes An underground geological formation, or group of formations, containing water. Are sources of groundwater for wells and springs. [EPA Terms of Environment] aquifers A point on the earth whose position has been determined by observations of celestrial bodies [NIMA] astronomical stations towers A structure designed primarily with a view to elevation, typically higher than wide. [USGS Circ 1048] A small depression in sandy terrain, caused by wind. [NIMA] blowouts bottomlands Low-lying alluvium-covered floodplain along a river valley. [Monkhouse & Small: Dictionary of the Natural Environment] cableways A conveyor system in which carrier units run on wire cables strung between supports. [USGS Circ 1048] A vertical or nearly vertical descent of water over a step or ledge in the bed of a river. [USGS Circ 1048] waterfalls collieries A coal mine and its connected buildings. [WWWebster Dictionary] commonwealths A nation, state, or other political unit: as a : one founded on law and united by compact or tacit agreement of the people for the common good. A state of the U.S. -- used officially of Kentucky, Massachusetts, Pennsylvania, and Virginia. An association of self-governing autonomous states more or less loosely associated in a common allegiance (as to the British crown). A political unit having local autonomy but voluntarily united with the U.S. -- used officially of Puerto Rico and of the Northern Mariana Islands. [WWWebster Dictionary} cwms Welsh name for a cirque. An artificial channel for carrying off excess water [A Dictionary of the natural environment] drains (channels) A site on a stream, lake, reservoir or other body of water where direct systematic observations of hydrologic data are obtained. [Water Resources Center, College of Agriculture, Univ. of Arizona, Glossary of Water Terms] gaging stations geysers Eruptive spring from which hot water and/or steam and in some cases mud are periodically thrown. General term for any works made to oppose a small number of troops against a greater. [AAT] fortifications isthmuses A narrow strip of land, bordered on both sides by water that connects two larger land areas. [USGS Circ 1048] nunataks Rocks or mountain peaks protruding through glacial ice. [NIMA] One of the major divisions of the vast expanse of salt water covering part of the earth. [NIMA] oceans drainage basins The area of land that drains water, sediment, and dissolved materials to a common outlet at some point along a stream channel. [EPA Terms of Environment] pinnacles (natural formation) A vertical, standing, often spire-shaped natural rock formation. [USGS Circ 1048] A flat, low-lying area of land reclaimed from the sea or a lake by artificial drainage. [Penguin Dict of Geology, Kearey] polders religious facilities prefectures The district governed by a prefect. [Merriam-Webster Online] A facing (as of stone or concrete) to sustain an embankment. [WWWebster's Dictionary] revetments A broad plain or salt flat in an arid or semi-arid region containing evaporites at a level dependent on the local water table. [Penguin Dict. of Geology, Kearey] sabkhas A region under the rule of a sheikh. [Merriam-Webster Online] sheikdoms subcontinents Land masses of great size but smaller than those generally called continents; also large subdivisions of continents having a certain geographical independence. [AAT] A state or country governed by a sultan. [Merriam-Webster Online] sultanates transmission lines A system of wires that transmit electrical signals or electricity over distance. [USGS Circ 1048] manmade features A naturally formed, subterranean open area or chamber. [USGS Circ 1048] caves amusement parks archipelagos mountain summits census areas statistical areas chart regions map regions climatic regions mountains continental divides continents coral reefs tectonic features economic regions hydrothermal vents A closed depression in an arid or semi-arid region that is periodically inundated by surface runoff, or the salt flat within such a closed basin. It is derived from the Spanish word for a 'beach' and is thus probably incorrectly used by English-speaking geomorphologists. [Encyc. Dictionary of Physical Geography] playas karst areas mobile home parks military areas Linear deep part of a body of water through which the main volume of water flows and is frequently used as a route for watercraft. channels seas pistol ranges storage structures A large container used for storage. [USGS Circ 1048] rift zones school districts A tract or plot of the Earth's surface distinguishable by ownership. [USGS Circ 1048] land parcels territorial waters UTM zones An extensive noncultivated area where vegetation is dominated by grasses or grass-like plants. [USGS Circ 1048] grasslands vistas transportation features mineral deposit areas coastal zones woods airport features A low point or opening between mounts or in a ridge. [USGS Circ 1048] gaps political areas A tubular conduit of substantial length, with pumps, valves, and control devices, for conveying fluids, gases, or finely divided solids. [USGS Circ 1048] pipelines arroyos seaplane bases An installation supporting aircraft capable of taking off and landing on water. [FACC] housing areas capitals court houses A structure erected over a depression or obstacle to carry traffic. [USGS Circ 1048] bridges reservoirs A constructed basin formed for recreation use, storage, treatment, collection, or processing of water or other liquids. [USGS Circ 1048] natural rock formations volcanic features performance sites ocean currents cirques A horseshoe-shaped, steep-walled valley head caused by glacial erosion. [Kearey, Dict of Geology] An area including a dam and associated structures functioning to control the flow or raise the level of water. [USGS Circ 1048] dam sites ocean trenches The topographic expression of subduction; the large linear depression of the oceanic lithosphere at a subduction zone. [Penguin Dict. of Geology, Kearey] streams correctional facilities A sheltered area of water where ships or other watercraft can anchor or dock. harbors piers Structures to which vessels may be berthed. [USGS Circ 1048] anticlines archaeological sites For ancient structures still largely intact and remains of ancient structures; also includes active excavations. [Lib of Congress, Thesaurus of Graphic Materials I ] An area where refuse is dumped. [USGS Circ 1048] disposal sites A group of associated structures functioning as a unit used for generating electricity. [USGS Circ 1048] power generation sites educational facilities research areas alluvial fans telecommunication features waterworks fjords Narrow deep inlets of the sea between cliffs or steep slopes. [Lib of Congress, Thesaurus of Graphic Materials I ] residential sites storage basins forests physiographic features An elongated depression in the Earth's surface that generally slopes from one end to the other. [USGS Circ 1048] valleys petrified forests countries, 4th order divisions fisheries An area cleared of vegetation for the purpose of impeding the progress of a grass or forest fire. [USGS Circ 1048] firebreaks thermal features parking sites A designated area where motor vehicles are set and left temporarily. [USGS Circ 1048] oil fields sports facilities Body or stream of ice moving outward and downslope from an area of accumulation; an area of relatively permanent snow or ice on the top or side of a mountain or mountainous area. glacier features fault zones parks Place or area set aside for recreation or preservation of a cultural or natural resource and under some form of government administration. research facilities seamounts capes A projection of land extending into a body of water that prominently marks a change in or interrupts the coastal trend of that water body. [USGS Circ 1048] heliports library buildings A treeless, level, or gently rolling plain characteristic of arctic or subarctic regions, having a permanently frozen subsoil, and usually supporting low growing vegetation such as lichens, mosses, and stunted shrubs. [USGS Circ 1048] tundras ice masses ridges A long and narrow upland with steep sides. [USGS Circ 1048] tribal areas A group of buildings or associated structures functioning as a unit used predominantly for educational. correctional, governmental, medical, or religious purposes. [USGS Circ 1048] institutional sites Hills of sand piled up by the wind. [USGS Circ 1048] dunes plains A region of general uniform slope, comparatively level and of considerable extent. [USGS Circ 1048] seafloor features recreational facilities museum buildings land regions offshore platforms lava fields A bowl-shaped depression in the surface of the land or ocean floor. [USGS Circ 1048] basins reference locations ecological research sites medical facilities The great body of salt water of the oceans. [USGS Circ 1048] ocean regions monuments data collection facilities railroad features A place where water issues from the ground naturally. [USGS Circ 1048] springs (hydrographic) islands launch facilities An area from which rockets/missiles may be housed and projected, usually equipped with associated buildings and facilities. [USGS Circ 1048] breakwaters