Big Hole in Siberia: Why This Enormous Crater Appeared in Russia
This is the 17th such feature, called a hydrolaccolith, that scientists have found across the thawing Siberian tundra, according to The Siberian Times. Researchers discovered the first one in 2014. They believe pockets of methane gases trapped beneath Earth’s surface bulge and eventually explode as carbon-rich permafrost in the region begins to melt, releasing trapped gases.
Weird.