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Take a quick tour of the worldâs largest pothole. Click play below. The worldâs largest pothole also happens to be the most popular pothole in Pennsylvania. But, Archbald Pothole isnât the only natural wonder in Pennsylvania. Check out this natural phenomenon in Pennsylvania that will absolutely blow you away. Click here to read more.
Kola wellâs derrick in 1980: still the worldâs deepest hole (Credit: Wikipedia) Decades ago, the Russians drilled deeper than anyone has ever gone. Their Kola Superdeep Borehole was started in 1970 and still holds the world record for the deepest hole in the ground. But they didnât reach the mantle.