A narrow, knife-edge ridge separating glacially eroded valleys or cirques is called a(n)

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A narrow, knife-edge ridge separating glacially eroded valleys or cirques is called an arete. Esker is a ridge of sediment deposited by a stream flowing inside or under a glacier. A drumlin is an elongated hill formed by the action of a glacier or ice sheet, typically in the shape of an inverted spoon. A horn is a pointed mountain peak formed by the cirque erosion due to multiple glaciers diverging outward.

A Narrow, Knife-Edge Ridge Separating Glacially Eroded Valleys or Cirques