This is a close up of Matanuska glacier. The spot directlyunder my camera is any where from 50 - 100 feet of ice. The dark area that looks like dirt is actually about half and inch of silt sitting on top of the glacier below. by Benjamin Traylor. Photo stock

This is a close up of Matanuska glacier. The spot directlyunder my camera is any where from 50 - 100 feet of ice. The dark area that looks like dirt is actually about half and inch of silt sitting on top of the glacier below.