TIL The Russian tried to dig a hole through the Earth’s crust in the 1970’s. They reached 40,318 feet deep before they stopped. It is still the deepest hole humans have ever dug. via /r/todayilearned


TIL The Russian tried to dig a hole through the Earth’s crust in the 1970’s. They reached 40,318 feet deep before they stopped. It is still the deepest hole humans have ever dug.
https://ift.tt/1ANCiay

Submitted November 09, 2018 at 05:34PM by saloomon
Via Reddit https://ift.tt/2DwNxQz
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