But if you bother to read further, this little factoid in the middle of it totally destroys the AGW crap:
"The crater formation first started after a large chunk of forest was cleared nearby in the 1960s. Because the ground was no longer shaded in the warm, summer months, it heated up more rapidly than it had in the past, eventually causing the permafrost to melt and the ground to collapse."
In other words, "OOPS! Ignore what we just said above about AGW being the reason for this collapse."
That's the problem with the AGW people. They have just a little itty bitty element of truth on their side because man is perfectly capable of changing micro climates. If projected on a global macro climate scale then not so much.
The example I use is that from around 1000, the vikings had thriving vineyards in Newfoundland, which lasted about 20 years before the natives, not climate change, drove them out. They also had large dairy herds in Greenland before the little ice age arrived about 400 years later. I then ask them two questions:
What you say is true - but it also had to be a lot warmer when the forests were thriving.....meaning it got a lot colder after that particular bout of “globull warming”....good thing the folks were ignorant back then - they might have committed mass suicide.