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 ...

Russian scientists have been drilling ... The Woodingdean Well is 1,285 feet deep. It's the deepest hole that humans have dug by hand. 33 Chilean miners were trapped in a mine for about 2 months ...

America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth ... and mining companies have dug large and wide to extract copper and diamonds.