thermokarst lake
a lake occupying a closed depression formed by settlement of the ground following thawing of ice-rich permafrost or the melting of massive ice.
Image
![https://nsidc.org/sites/default/files/cryosphere/glossary/thermokarstGlossary.jpg thermokarstGlossary.jpg](/sites/default/files/styles/large/public/2020-12/thermokarstGlossary.jpg.webp?itok=3KMj6IIb)
Increased thawing of frozen ground could create more thermokarst features, like this lake.
Andrew Slater
Topic(s):
frozen ground or permafrost