Photograph taken by:
Hubert Staudigel
Dust and rocks accumulate at the ice surface, warm up in the sun and use this heat to melt holes in the ice. This process is responsible for making ice formations that are riddled with vertical cavities that may weaken the ice enough that it does not support your weight when you step on it.
Location
Lake Fryxell
Antarctica
Created by Hubert Staudigel on Monday, 15 November 2010 and updated on Tuesday, 16 November 2010
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