New York Underground
[Level One Tour]

At 30 to 200 feet (9 to 60 meters) under the city things are a little roomier and the items found get a whole lot bigger. The 63rd Street subway tunnel—New York’s most recent subway development—is at this level. Electric current is needed to run the subway system and to light stations and work areas. Water and sewage lines service restrooms and work areas. From the bedrock below much of Manhattan, large riser shafts poke through to the upper reaches, delivering water from the giant water tunnels below.