Remember when you were a kid digging holes in the sandpit, secretly hoping you could dig your way to China? While that’s pretty much impossible, some people have managed to dig some mightily huge holes! From a well built by hand below sea level to a miles-long oil rig, here are 15 of the deepest holes ever dug by humans!
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Remember when you were a kid digging holes in the sandpit, secretly hoping you could dig your way to China? While that’s pretty much impossible, some people have managed to dig some mightily huge holes! From a well built by hand below sea level to a miles-long oil rig, here are 15 of the deepest holes ever dug by humans! 
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