In 2014, Yamal was the discovery site of a distinct sinkhole or pingo which quickly drew the attention of world media.
A spokesperson for the Yamal branch of the Emergencies Ministry said, "We can definitely say that it’s not a meteorite."
The 60-meter (66-yard) crater is believed by a senior researcher from the Scientific Research Center of the Arctic, Andrei Plekhanov, in remarks to the Associated Press, to be likely the result of a "buildup of excessive pressure" underground because of warming regional temperatures in that portion of Siberia. Tests conducted by Plekhanov's team showed unusually high concentrations of methane near the bottom of the sinkhole.
The destabilization of gas hydrates containing huge amounts of methane gas are believed to have caused the craters on the Yamal Peninsula.
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