According to reports, massive holes nearly 100 feet deep were witnessed by a Russian TV crew flying over Siberia's tundra region Reports said the massive holes could be linked to climate change, however, researchers have still not been able to point to the exact reason behind the mysterious holes which was first spotted in 2014 in the region, reports indicated.

Mysterious holes nearly 100 feet deep appear in Siberia's tundra region

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Mysterious holes nearly 100 feet deep appear in Siberia's tundra region