 The Tunnel of Eupalinos was built in the 6th century BCE in Greece. It's just over 1km long, goes through a mountain, and was built from both sides. And! It was built as an aqueduct, so it has two parts; a footpath and a lower water channel. It was in use for a thousand years before the channel silted over. AND! It still exists and can be visited and we mostly know about it and rediscovered it due to Herodotus mentioning it. How cool is this?? https://en.wikipedia.org/wiki/Tunnel_of_Eupalinos 11 comments
@rixx Wow, fascinating! Sad that one can't walk through the whole tunnel, though. There is a similar (but very more recent, from 1937) tunnel in the Azores that is open to the public, I have walked through it.    @rixx I've been in this tunnel. It's very cool (both meanings). IIRC portions of it were used to hide locals from invaders during one of the world wars.  Thanks, that is indeedy cool. We visited this antique water system in China, also cool. They grew grapes and watermelon, and water ran past every home - in a desert! At night people dragged their beds over the small canals to sleep more comfortably. |
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@rixx
Very cool! Just spent a fun few minutes on the Wiki link. Thank you!