Wow! Super cool story, imagine fishing in your basement, I feel his sadness though losing such a wonderful thing.
I've heard that there are many underground rivers under my city, London; I'd love to find access to at least one of them. Though I'd be scared of getting lost if I ventured to far :-)
Cg
Thanks @cryptogee :D
While NYC has a lot, I'm sure London has much more! Take a look at this guy's underground photography. Duncan has done a lot of exploring in your neck of the woods. http://mymodernmet.com/steve-duncan-undercity/
Wow, just wow! I often think that what we are walking around on today may be underground in a century or two, and people of the future will be discovering our rivers, our tunnels and trash.
Cg