07-19-2014, 12:45 PM
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Apocalypse
Industry Role:
Join Date: May 2007
Location: Limbo
Posts: 3,043
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It's a collapsed pingo.
http://en.wikipedia.org/wiki/Pingo
Quote:
A pingo, also called a hydrolaccolith, is a mound of earth-covered ice found in the Arctic and subarctic that can reach up to 70 metres (230 ft) in height and up to 600 m (2,000 ft) in diameter.
[...]
Rounded tops are common for smaller pingos, but larger ones often have breaks in the ice at the top. These larger pingos can have craters that have cones resembling those from volcanoes.
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