World's deepest hole once known as 'entrance to hell' sealed up for concerning reason
indy100.com
World's deepest hole once known as 'entrance to hell' sealed up for concerning reason
Deep in the Arctic Circle, in Russia, lies the deepest hole ever dug which was once called 'the entrance to hell'.The Kola Superdeep Borehole is the deepest manmade hole, and deepest artificial point, on Earth, measuring at 40,230ft feet.To put it into perspective, that's 12.2km, or 7.58 miles - tha...
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The Kola Superdeep Borehole remains one of humanity’s most ambitious scientific drilling projects. Begun in the 1970s by Soviet scientists on the Kola Peninsula in northwestern Russia, the borehole ultimately reached a depth of 12.2 kilometers (7.6 miles)—the deepest point ever drilled into Earth’s crust. The goal wasn’t oil or minerals, but pure science: to study the composition and structure of the continental crust. What researchers found surprised them. Temperatures at depth exceeded 180°C (
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