Roche moutonnée
Rock formation created by the passing of a glacier / From Wikipedia, the free encyclopedia
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In glaciology, a roche moutonnée (or sheepback) is a rock formation created by the passing of a glacier. The passage of glacial ice over underlying bedrock often results in asymmetric erosional forms as a result of abrasion on the "stoss" (upstream) side of the rock and plucking on the "lee" (downstream) side. Some geologists limit the term to features on scales of a metre to several hundred metres[1]: 324–326 and refer to larger features as crag and tail.