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A ravine is a landform that is narrower than a canyon and is often the product of streambank erosion. Ravines are typically classified as larger in scale than gullies, although smaller than valleys. [1] Ravines may also be called a cleuch, dell, ghout , gill or ghyll, glen, gorge, kloof (South Africa), and chine (Isle of Wight)
In geography, a defile is a narrow pass or gorge between mountains or hills. The term originates from a military description of a route through which troops can march only in a narrow column or with a narrow front. [1] On emerging from a defile (or something similar) into open country, soldiers are said to "debouch".
Canyon / Gorge – Deep chasm between cliffs; Chine – Steep-sided river valley; Couloir – Steep, narrow mountain gully; Defile (geography) – Narrow pass or gorge between mountains or hills; Gully – Landform created by running water and/or mass movement eroding sharply into soil; Mountain pass – Route through a mountain range or over a ...
A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in ...
The four-lane bridge spans the North Fork of the American River in Placer County between the city of Auburn and the town of Foresthill in the Sierra Nevada foothills. [2] Pedestrians can walk the length of the bridge in both directions. There was anti-Auburn Dam graffiti, showing protest of the planned dam, on the bridge's underside.
State Route 18 (SR 18) is a 28.41-mile-long (45.72 km) state highway in the U.S. state of Washington, serving southeastern King County.The highway travels northeast, primarily as a controlled-access freeway, from an intersection with SR 99 and an interchange with Interstate 5 (I-5) in Federal Way through the cities of Auburn, Kent, Covington, and Maple Valley.
The Howard A. Hanson Dam is an earthen embankment structure at a length of 675 ft (205 m) and height of 235 ft (70 m). The base of the dam is 960 ft (290 m) wide and sits within Eagle Gorge, a ravine with nearly vertical rock walls.
Grand Canyon, Arizona, at the confluence of the Colorado River and Little Colorado River.. A canyon (from Spanish: cañón; archaic British English spelling: cañon), [1] gorge or chasm, is a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over geologic time scales. [2]