Cracks along the columns are subject to water and ice erosion.
2.
The three summits are tightly grouped around a small corrie ( glacial cirque ), but their spectacular form is due to large-scale landslipping, not ice erosion.
3.
The truth is, however, that the ice cap has always had bits falling off; it is part of a natural process of ice erosion compensating for the accumulation of ice from snowfall over the Antarctic.
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