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This kind of hidden engineering is just amazing. I love finding out about huge construction projects like this that you might never even notice. Just under your

This kind of hidden engineering is just amazing. I love finding out about huge construction projects like this that you might never even notice. Just under your feet… making the world work.

_Algernon_ 5y ago
Tom Scott has a video about it: https://www.youtube.com/watch?v=cfJOW2PtrGk https://www.youtube.com/watch?v=cfJOW2PtrGk