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:This article is about the physical-geographic term. For places named "Valley" see Valley (disambiguation).thumb Fljótsdalur in East- Iceland
A valley is a landform, typically at least a few square miles (kilometers) but often hundreds or even thousands of square miles (kilometers), surrounded by higher areas, mountains, or hills.
Valleys are formed by numerous geographical processes, and can result in 'Glacial Valleys' formed millions of years ago by Glaciers, or Rift Valleys, formed by the expansion of the Earths crust due to activitiy beneath the Earths surface. Valleys are most commonly formed by fluvial activity (the action of running water), which erodes the landscape.
1 Famous valleys
2 See also
- geography
- geomorphologyGeomorphology is the study of present-day landforms, including their classification, description, nature, origin, development, and relationships to underlying structures, as well as the history of geologic changes as recorded by these surface features.
- valeIn geography a vale is a wide river valley, usually with a particularly wide flood plain or flat valley bottom. Vales commonly occur between the scarp slopes of pairs of chalk downs, where the chalk dome has been eroded, exposing less resistant underlying
- list of landforms
Valleys
