I'm reading MOLE PEOPLE about communities that live in 1980's in NYCity subway tunnelsDo these still exist ?

Question

Homeless people live in tunnels and sewers and have underground communities. Some come up for school or even a job, but quietly return to the tunnels instead of a home. Good book!

Answer 1

Actually it turns out that that book is an entire fabrication.

One or two live there, but not an entire community.

Answer 2

Yup. They still don't know how many subterranean city dwellers there are.