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 - that's the ...
This endeavour, known as the Kola Superdeep Borehole, proved more successful, penetrating deeper into the Earth and yielding samples that continue to astound scientists. The Kola Superdeep ...