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Apr 10, 2018 at 12:44 vote accept Lars Bosteen
Feb 28, 2018 at 13:49 comment added mart en.wikipedia.org/wiki/Tunnel_of_Eupalinos might have insights.
Feb 24, 2018 at 5:01 comment added Denis de Bernardy Any insights on how they pulled off excavating the thing from both ends?
Feb 24, 2018 at 1:16 history edited Alex CC BY-SA 3.0
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Feb 24, 2018 at 1:13 comment added Alex @jamesqf: I do not know much detail about the Jerusalem tunnel, but the crucial evidence that they had difficulty in laying it straight is that it is in fact not straight, so they spent more labor on it than they could.
Feb 24, 2018 at 0:46 comment added Lars Bosteen This is worth an upvote as the Samos tunnel is worth mentioning for being 'excavated from both ends' even though it's primary purpose (as you acknowledge) was to supply water. It's not impossible that people walked through it from time to time.
Feb 23, 2018 at 18:51 comment added jamesqf Might the vertical wells in the Jerusalem tunnel have been for ventilation?
Feb 23, 2018 at 17:28 history edited Alex CC BY-SA 3.0
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Feb 23, 2018 at 17:18 history answered Alex CC BY-SA 3.0