what is Crevasse ? ( This question belongs from types of glacier)
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A crevasse is a deep crack,or fracture, found in an ice sheet or glacier, as opposed to a crevice that forms in rock.
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Crevasses, which are usually deep, steep, and thin, are a serious danger for mountaineers. Sometimes, a thin layer of snow may form over a crevasse, creating a snow bridge. ... Crevasses can create seracs, which are also dangerous to mountaineersIf you fall in a crevasse you can use the ice screw to secure yourself so you don't fall deeper. The pulley and carabiners are for rescuing others. Two ice tools, crampons, rope, and several ice screws (basically, ice climbing gear) may allow you to climb out yourself.
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