Landform

Alpine permafrost (most permafrost is located in high latitudes (i.e. land in close proximity to the North and South poles)) may exist at high altitudes in much lower latitudes.

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.")

In a range of hills or, especially, of mountains, a pass (also gap, notch, col, saddle, hause, bwlch (Welsh), brennig or bealach (Gaelic)) is a path that allows the crossing of a mountain chain.

Cliff is a significant vertical, or near vertical, rock exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers.

Crevasses cracks in the glacial ice. The upper 30 meters of glacial ice is somewhat brittle, and as the glacier flows, cracks develop. Crevasses rarely extend to depths below approximately 30 meters because the ice below that too plastic and the cracks close.

Escarpment is a steep slope or long cliff that results from erosion or faulting and separates two relatively level areas of differing elevations.

Foothills are geographically defined as gradual increases in hilly areas at the base of a mountain range. They are a transition zone between plains and low relief hills to the adjacent topographically high mountains.

Glacier is a perennial mass of ice which moves over land. A glacier forms in locations where the mass accumulation of snow and ice exceeds ablation over many years. Columbia Icefields, Alberta Canada

Glacial erratic is a piece of rock that differs from the size and type of rock native to the area in which it rests.

Glacial lake is a lake with origins in a melted glacier.

Gully is a landform created by running water eroding sharply into soil, typically on a hillside. Gullies resemble large ditches or small valleys, but are metres to tens of metres in depth and width.

Horn a pyramid-shaped mountain peak created by several glaciers eroding away at different sides of the same mountain

Glacier and Mountain terms