Business Insider7y
Humans have dug much deeper than you would expect
Virginia is 720 feet underground. It was built to keep Congress safe in an emergency. If the Eiffel Tower were buried up to the tip the base would reach down to here. The Woodingdean Well is 1,285 ...
Business Insider India7y
This incredible animation shows how deep humans have dug
Virginia is 720 feet underground. It was built to keep Congress safe in an emergency. If the Eiffel Tower were buried up to the tip the base would reach down to here. The Woodingdean Well is 1,285 ...