Foothills

Rocky Mountain foothills near Denver, Colorado

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.

  1. ^ Easterbrook, Don J. (1999). Surface Processes and Landforms (second ed.). Upper Saddle River, New Jersey: Prentice Hall. p. 530. ISBN 978-0-13-860958-0.

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