Cirque
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A cirque is an amphitheatre-like valley formed by glacial erosion. Alternative names for this landform are corrie and cwm. A cirque may also be a similarly shaped landform arising from fluvial erosion
Two cirques with semi-permanent snowpatches near Abisko National Park, Sweden
Upper Thornton Lake Cirque in North Cascades National Park, U.S.
Maritsa cirque in Rila Mountain, Bulgaria
The Lower Curtis Glacier in North Cascades National Park is a well-developed cirque glacier; if the glacier continues to retreat and melt away, a lake may form in the basin
Bergschrund
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A bergschrund is a crevasse that forms where moving glacier ice separates from the stagnant ice or firn above. It is often a serious obstacle for mountaineers. Bergschrunds extend to the bedrock, and
A bergschrund—the long crack at the foot of the mountain slope—in the Ötztal Alps
Open bergschrunds at Mont Dolent