Glaciers Glaciers go to geology Image list , Rivers Rivers of Ice Glacial ice is one of the foremost scenic and scientific values of Olympic National Park. The prominent glaciers are those on Mount Olympus covering approximately ten square miles. Beyond the Olympic complex are the glaciers of Mount Carrie, the Bailey Range, Mount Christie, and Mount Anderson. In the company of these glaciers are perpetual snowbanks that have the superficial appearance of glacial ice. Because they are lacking in the criteria below, they are not true glaciers.
True glaciers are structurally three layered bodies of frozen water.
Crevasses or deep cracks in the glaciers form as the ice is subjected to uneven flow over alpine terrain. Another structural feature is the bergschrund, which is a prominent crevasse-like opening at the head of the glacier where the ice has been pulled away from the mountain wall. There is no great advance of Olympic glaciers today and each has retreated substantially since the late 1800's. Still, forward surges in glacial flow do occur after a number of very heavy winters and cool summers, but such activity has been relatively infrequent with Olympic glaciers in recorded time. The climate influencing Olympic glaciers is wet and temperate.