Workers Uncover Underground Chamber Sealed for over a Century Near National Mall
smithsonianmag.com
smithsonianmag.com
> The dry cistern was discovered by construction crews...
So it's more interesting than (say) a section of disused drainage pipe, but not by much.
Coolest thing about the article, IMO, is the photograph of https://www.si.edu/castle
Don’t even feel guilty about the ad blocker they guilt tripped me about.