The Permafrost Mystery: scientists explore giant Yamal Sinkhole

The appearance of giant craters in Siberia sparked dozens of wild theories about their origins, from meteorites to UFOs. An RT Doc crew travelled to the region to try to find explanations for the geological mystery. Mysterious giant craters have started to appear in Siberia, some say they’re a new phenomenon others that they have existed since the dawn of time. This riddle of nature attracted RT Doc to the land of the nomadic Nenets. Our team met visiting scientists and locals, in search of answers either f