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People have been digging into the Earth for hundreds of years. Sometimes for science, sometimes for oil, sometimes for diamonds. But some of these holes are so deep that it's hard to imagine them. One goes 12 kilometers down. Another was dug by hand. A third sits under the ocean. And the deepest one of all has a story that people still tell with a chill. So what's really hiding in the deepest holes on Earth? And why have some of them been abandoned? ---------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------- Our Social Media: ---------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------- This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.