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Hills before a mountain range From Wikipedia, the free encyclopedia
Foothills or piedmont are geographically defined as gradual increases in elevation at the base of a mountain range, higher hill range or an upland area. They are a transition zone between plains and low relief hills and the adjacent topographically higher mountains, hills, and uplands.[1] Frequently foothills consist of alluvial fans, coalesced alluvial fans, and dissected plateaus.
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Foothills primarily border mountains, especially those which are reached through low ridges that increase in size closer and closer to the mountain,[2] but can also border uplands and higher hills.[3]
Areas where foothills exist, or areas commonly referred to as the foothills, include the:
Another word for a foothill region is "piedmont", derived from "foot of the mount" in Romance languages.[4] The Piedmont region of Italy lies in the foothills of the Alps, and several other foothills in other parts of the world are called "piedmont", and include:
Ecosystems of piedmonts (foothills) are often known as submontane zones, relating to the higher montane ecosystems.
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