Dark Days (2000) - Marc Singer follows a group of people living in an abandoned section of the New York City underground railway system in the 90s [1:21:42]

Dark Days is an American documentary film directed, produced, and photographed by the English documentarian Marc Singer. Shot during the mid-1990s, it follows a group of people who lived in the so called Freedom Tunnel - a railroad tunnel carrying the West Side Line under Riverside Park in Manhattan, New York City. The filming took two-and-a-half years. Documentary won three awards at the Sundance Film Festival.