"New Yorkers can start using a secret subway tunnel under Central Park this December" (2016)

https://qz.com/697447/new-yorkers-can-start-using-a-secret-subway-tunnel-under-central-park-this-december/

>>8659823 pb

>The Q Train

https://www.travelandleisure.com/attractions/secret-subway-tunnel-under-central-park-new-york-city

>>8659369 (2016)

>Philadelphia underground tunnel system

>>8659329 (2013)

>M. Bloomberg hosted press conference 200 feet below the surface of Central Park - in Water Tunnel #3