9 years ago
1
The Deepest Holes Dug by Hand
To excavate mines and tunnels, we use drills and expensive machines. So how did our ancestors manage to dig hundreds of metres into the Earth?
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When I was a kid I loved digging. My record is a 6Lx8Wx6D 'cavern' with a 3x3 entrance. To know that I was only 1280 feet from setting a world record is exciting!