BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY BERNHARD EDMAIER / SCIENCE PHOTO LIBRARY
Meltwater cave. View of the interior of a meltwater cave in a glacier. These caves form as ice on top of the glacier melts and runs down crevasses, collecting deep in the body of the glacier. The eroding action of this water gradually links numerous crevasses, forming a large body of water inside the glacier. When this reservoir penetrates the glacial wall, the water floods out, carrying debris (black) and further eroding the glacier. Photographed in the Worthington glacier, Alaska, USA.
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