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A curve or recess in a coastline, river, or other geographical feature
A steep-sided gully cut by running water in an arid or semiarid region
A cone-shaped deposit of sediment crossed and built up by streams
An area of irregular limestone in which erosion has produced fissures, sinkholes, underground streams, and caverns
A narrow strip of land with sea on either side, forming a link between two larger areas of land
A piece of land that juts out from a larger land mass and is mostly surrounded by water
An area of high land with a flat top and two or more steep, clifflike sides
The channel of a watercourse that is dry except during periods of rainfall
A half-open steep-sided hollow at the head of a valley or on a mountainside, formed by glacial erosion
A small mountain lake
A long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice
A keel-shaped crest or ridge of rock, formed by the action of the wind
A small stream
A tract of open and uncultivated land
A long, steep slope, especially one at the edge of a plateau or separating areas of land at different heights
A ring-shaped coral reef including a coral rim that encircles a lagoon partially or completely
A deep fissure in the earth, rock, or another surface
A small hill, usually separated from other hills
A large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano
A long, narrow, deep inlet of the sea between high cliffs
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