Hacker News new | ask | show | jobs
by thewebguyd 1 hour ago
If there was ever a candidate for alien intervention its the roman aqueducts, and like you said, I never see any conspiracies for that either. The romans figured out water filtration, built a massive underground network, figured out hydraulic pressure, and created concrete that can set underwater and resisted cracking.

Far more impressive than a pyramid IMO.