Snow cornice

A cornice of snow about to fall. Cracks in the snow are visible in area (1). Area (3) fell soon after this picture was taken, leaving area (2) as the new edge.

The summit of San Jacinto Peak covered by a cornice formed by wind-blown snow.

Massive snow cornices line the summit ridge of Siula Grande, and are a characteristic feature of this peak.

A snow cornice or simply cornice (from the Italian cornice meaning "ledge") is an overhanging edge of snow on a ridge or the crest of a mountain and along the sides of gullies. They form by wind blowing snow over sharp terrain breaks (e.g. the crest of the mountain) where it attaches and builds out horizontally. This build up is most common on the leeward sides of mountains. Cornices are extremely dangerous and travelling above or below them should be avoided.

单词	Snow cornice
释义	Snow cornice 英语百科 Snow cornice A snow cornice or simply cornice (from the Italian cornice meaning "ledge") is an overhanging edge of snow on a ridge or the crest of a mountain and along the sides of gullies. They form by wind blowing snow over sharp terrain breaks (e.g. the crest of the mountain) where it attaches and builds out horizontally. This build up is most common on the leeward sides of mountains. Cornices are extremely dangerous and travelling above or below them should be avoided.
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