A "disappearing bog" or a "permafrost slump" are a couple things it has been called. What it is is a
#landslide on the geology of an arctic region that has had "permanent" ice for 2+ years.
The main thing to make note of, should you come across one of these things in the wild, is that it has a muddy sinking floor. This sinking is the result of sub-surface ice melting. The land on top of the ice can no longer sustain without solid ice, so it literally sinks an entire ecosystems built on top of it.
Here's a story about what one indigenous group in Canada is doing to monitor and assess damages:
"Cholo is an Indigenous Guardian, part of a federally funded environmental stewardship program that monitors the health of the land and species on their traditional territory.
Cholo does most of the environmental monitoring during the summer on behalf of the Liidlii Kue First Nation in Fort Simpson, N.W.T. When he gets to an area with permafrost slumps, he takes photos with a camera that tracks GPS data. He records this data and gives it to the First Nation.
A few weeks ago, Cholo packed into a classroom in Fort Simpson with a dozen other local Indigenous leaders and guardians to take a workshop on digital mapping, which would take his observations from the paper to the computer. "[1]
"Thaw slumps are common permafrost mass-wasting features, and consist of a headwall made predominantly of ice and a muddy slump floor."[4]
[1]
https://www.cbc.ca/news/canada/north/indigenous-guardians-permafrost-map-workshop-1.5480069[2]
https://www.hakaimagazine.com/news/toxic-thaw-syndrome[3]
https://www.esa.int/ESA_Multimedia/Images/2019/05/Thaw_slump[4]
https://www.nwtgeoscience.ca/services/permafrost-thaw-slumps#permafrost #bogs #climate #indigenous #ecosystem #geology #landslides #arctic