a bizarre 160 feet deep hole appeared in northern Siberia, one of several to appear in the country in recent years. The remarkable phenomenon was spotted by chance in late July when a TV crew flew over it on their way back from reporting an unrelated story.Scientists believe the mysterious holes are a symptom of climate change, and occur as permafrost thaws.Dr Evgeny Chuvilin, a leading researcher at Skolkovo Institute of Science and Technology, told the Siberian Times : "What we saw today is striking in its size and grandeur."These are the colossal forces of nature that create such objects.".
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