There doesn’t seem to be much information out there on this but allegedly, there is a vast network of ancient tunnels that link Scotland to Europe.
Has anyone seen these?
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Musk tunnel machine can go 6 miles a day. They could be everywhere.
Some of the most efficient mines in the world can only do 100m/day. So not sure where 6 miles comes from but its not possible in any type of soil or rock.
Makes a glass tunnel. Real cool stuff.