Singer had befriended many in New York's homeless community and later, after hearing of people living underground in abandoned tunnel systems, he met and became close to a group of people living in The Freedom Tunnel community stretching north from Penn Station past Harlem.
Singer had befriended many in New York's homeless community and later, after hearing of people living underground in abandoned tunnel systems, some as deep as 980ft. He met and became close to a group of people living in The Freedom Tunnel community stretching north from Penn Station past Harlem.