SIMON FRASER / SCIENCE PHOTO LIBRARY SIMON FRASER / SCIENCE PHOTO LIBRARY
Icefall from the sides of Makalu, a peak in the Himalayas, Nepal, which rises 8475 metres above sea level and is the world's fifth highest mountain. The icefall is dropping onto moraines of Barun glacier (out of sight in this photograph), which is in retreat. Moraines consist of rock material which has been carried and deposited by a glacier. The material is derived from the slopes above, as scree material, or is scraped up from the rocks over which the glacier passes.
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