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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.

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Published: October 12, 2015, 00:00 View: 2

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0:50

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Aleksandr Lutsenko

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