DR JUERG ALEAN / SCIENCE PHOTO LIBRARY DR JUERG ALEAN / SCIENCE PHOTO LIBRARY
Cryoconite holes. Close-up of cryoconite holes on a glacier. A cryoconite hole forms when dust is deposited in ice or snow. The deposit is darker and therefore absorbs solar radiation better than the surrounding area. This melts the snow or ice beneath the deposit, forming a hole. Photographed on the Forno glacier, Switzerland.
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