Once upon a time, there were slaughterhouses on the island of Manhattan. But, even in the 1870s it wasn't easy to move a herd of cattle through New York City, so that job was done underground. Now, Gothamist has found evidence that two of the "Cow Tunnels" that took cows from dock to death may still exist below 12th Avenue at West 34th St. and West 38th St. Exploration, ahoy!
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.