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Royal envoy challenge level 15 interfluve
An interfluve is a narrow, elongated and plateau-like or ridge-like landform between two valleys. Whittow, more generally, defines an interfluve as an area of higher ground between two rivers in the same drainage system.
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Formation
These landforms are created by earth flow ("solifluction"). They can also be former river terraces that are subsequently bisected by fluvial erosion. In cases where there is a deposit of younger sedimentary beds (loess, colluvium) the interfluves have a rounder and less rugged appearance. A consequence of interfluve formation is the so-called "interfluvial landscape."
Occurrence of interfluvial landscapes
References
Interfluve Wikipedia(Text) CC BY-SA