Keeping To Siberia,

it appears that the locals are having problems with pingos,

at Antipayuta, on the Yamal Peninsula, according to Carolyn Ruppel, chief of the U.S. Geological Survey’s Gas Hydrates Project, she suggested a explanation related to pingos, which are mounds of earth-covered ice in the Arctic and subarctic regions,

“A pingo is a plug of ice that forms near the surface over time and has a small mound or hill on top,” Ruppel explained. “When an ice plug melts rapidly – as may have been, thanks to unseasonably warm temperatures in Siberia over the past year – it can cause part of the ground to collapse, forming a crater.” but most experts contended this theory, saying that the ejected rocks found at the rim of the craters suggest an explosion, not a collapse,

in July 2015, after conducting an expedition to one of the craters, Professor Vasily Bogoyavlensky told the Siberian Times that it was indeed most likely caused by an exploding pingo, “It was a pingo or bulgunnyakh (mounds with an ice core common for Arctic and sub-Arctic regions), and then, due to the Earth’s heat flow this pingo starts to thaw and its half melted ice core is filled with gas that originates from the depth through cracks and faults in the ground,” he said, while the exact causes of Siberia’s giant craters remain a mystery, authorities are trying to find an ‘urgent’ strategy to ensure safety of the people in the region, I have my own theory, aliens, the holes were made when they switched on their retro rockets as they landed on earth looking for a Sasquatch or a Yeti to take home as a pet!