Record Taken Over

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So as of June 6, 1979, one of the Kola boreholes, dubbed SG-3, ended up snagging the record that the manhole in Oklahoma had held. So in the year 1983, the hole, that was mere nine inches wide, managed to travel a staggering 39,000 feet into Earth’s crust. So this officially made it the deepest hole ever to be dug into the earth’s surface.