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Snow bridge
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A snow bridge is an arc formed by snow across a , a crack in rock, a , or some other opening in terrain.Elaine Freedgood (2000) Victorian Writing about Risk: Imagining a Safe England in a Dangerous World, p. 193. It is typically formed by , which first creates a cornice, which may then grow to reach the other side of the opening.


Dangers
A snow bridge may completely cover the opening and thus present a danger by creating an illusion of unbroken surface under which the opening is concealed by an unknown thickness of snow, possibly only a few centimetres.

Snow bridges may also form inside a crevasse, making it appear shallow.Tony Holt (Spring 2002) "Berner Oberland Haute Route Journal", Chauvin Guides International, archived 2007-08-13.

A snow bridge is thicker and stronger at the edge of a crevasse; therefore, a fall through a bridge usually happens at some distance from the edge. Mountain Operations (September 1947) United States War Department Field Manual FM-10, p. 204


See also

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