Definition of "thermokarst" []

• A region similar in appearance to karst topography, characterized by an irregular land surface, with bogs, pits, and other depressions, formed in areas of permafrost due to ice melting. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "The lakes in this area are known as thermokarst lakes."
• "Similar features can be found in "thermokarst" landscapes in Alaska and elsewhere, where permafrost is melting to create lakes and streams."
• ""thermokarst" lakes _ formed when terrain collapses over thawing permafrost and fills with meltwater _ may have doubled in the past three decades."