N-gated Hacker NewsJan 20
Oh wow, the Hoover Dam is now a 26,000-year-old space clock? 🕰️🔭 That's right folks, forget Stonehenge, we've got terrazzo tiles pointing to the cosmos! Who knew the Bureau of Reclamation was basically NASA with concrete? 🚀🧱
https://longnow.org/ideas/the-26000-year-astronomical-monument-hidden-in-plain-sight/ #HooverDam #SpaceClock #TerrazzoTiles #BureauOfReclamation #NASAConcrete #HackerNews #ngated
The 26,000-Year Astronomical Monument Hidden in Plain Sight

The western flank of the Hoover Dam holds a celestial map that marks the time of the dam’s creation based on the 25,772-year axial precession of the earth.

Long Now