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    Formation of valleys

    Valleys may arise through several different processes. Most commonly, they arise from erosion over long … See more

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    Valley - Wikipedia

    • 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 valleys in high m… See more

    Terms for valleys

    There are many terms used for different sorts of valleys. They include:
    • Cove: A small valley, closed at one or both ends, in the central or southern Appalachian Mountains which sometimes results from the erosio… See more

    Human settlement

    Some of the first human complex societies originated in river valleys, such as that of the Nile, Tigris-Euphrates, Indus, Ganges, Yangtze, Yellow River, Mississippi, and arguably the Amazon. In prehistory, the rivers were … See more

    Notable examples

    • Albertine Rift
    • East African Rift
    • Ethiopian Rift Valley
    • Great Rift Valley
    • Nile Valley (Egypt/Sudan/Ethiopia/Uganda)… See more

    Extraterrestrial valleys

    Numerous elongate depressions have been identified on the surface of Mars, Venus, the Moon, and other planets and their satellites and are known as valles (singular: 'vallis'). Deeper valleys with steeper sides (akin to canyons) o… See more

    See also

    • Geography portal
    • Canyon – Deep chasm between cliffs
    • Grass valley – Meadow within a forested and relatively small drainage basin
    • Gully – Landform created by running water and/or mass move… See more

    External links

    • Valley Development Four Stages of Valley Development
    • NPS.gov, University of Wisconsin
    • UWSP.edu, Glossary of Alpine Glacial Landforms… See more

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    Table of Contents
    Formation of valleys
    Terms for valleys
    Human settlement
    Notable examples
    Extraterrestrial valleys
    See also
    External links
     
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