Eight giant, 160-foot-deep (50 meters) craters in the Siberian permafrost have baffled scientists since their discovery more than a decade ago — but a new theory may finally explain how they formed.
The craters are unique to Russia's northern Yamal and Gydan peninsulas and are not known to exist elsewhere in the Arctic, suggesting the key to this puzzle lies in the landscape, according to a preprint paper published Jan. 12 to the EarthArXiv database.
