What's the deepest hole we could reasonably dig with our current level of technology? If you fell down it, how long would it take to hit the bottom?
What's the deepest hole we could reasonably dig with our current level of technology? If you fell down it, how long would it take to hit the bottom?
submitted by /u/The_Sven to /r/askscience
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http://ift.tt/1VgXqRm
submitted by /u/The_Sven to /r/askscience
[link] [comments]
http://ift.tt/1VgXqRm
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