Giant sinkholes which started appearing in Yamal Peninsula, Russia last year remain a mystery to scientists investigating this phenomena around the world.
Theories about what's causing them are numerous… from UFO's to natural gas which is abundant in this region. Locals, however, are not looking for scientific explanation. They prefer to believe that giant, perfectly round craters, have a 'connection to another world'.
Vasily Bogoyavlensky, head of the geological and geophysical lab working on the site, told RT he believes gas is the unique cause of these phenomena, because the gas, thanks to gravity, tries to come to the surface, searches for fractures and cracks, and goes through to the surface.
An RT documentary has traveled to the region to try and lift the veil behind the mystery:
Video courtesy of RT
Featured image credit: RT.
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