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Kåfjord | Thermokarst
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Such depressions form by the collapse of ice-cored areas due to thawing processes. This phenomenon is called "thermokarst" due to some degree of resemblance of the resulting features with karstic sinkholes, even though the processes behind are completely different.

Thursday 1 August 2002 by Martin Mergili in Europe / Norway (1723 visits)