Ask Smithsonian: What’s the Deepest We’ve Ever Dug Into the Earth?

What’s the world record for deepest vertical dig? Go ahead, take a guess. We bet you won’t come close to the surprising answer unearthed in this one-minute video by Ask Smithsonian host, Eric Schulze. Then, stick around to find out what scientists found lurking below. (1:17)

Learn more about digging deep here.

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