Landform

Arete a steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding away on opposite sides of the ridge.

Kjeragbolten, a 5 m³ boulder wedged in a mountain crevasse by the edge of the Kjerag mountain[1]

Chaco and Fajada Butte [2] is located in northwestern New Mexico.

A steep-walled mountain basin which usually forms the blunt end of a valley. (French for "circus.")

Horn