Photos of Massive Underground Caverns Being Dug Under NYC

It’s obvious that building a subway station would consist of digging a very large artificial cavern under the earth, but actually seeing one in progress is pretty incredibly. And thanks to the Metropolitan Transportation Authority’s Flickr stream, we can.

The MTA of New York has been building the Second Avenue Subway’s future 86th Street Station for some time now, and they’re keeping the public up to date on the stations progress through photos courtesy of photographer Patrick Cashin.

Here are a few of those photos:

These caves are being dug roughly 100 feet below street level, weaving under, over and around pipelines, other subways lines and the Queens-Midtown Tunnel that links Manhattan and Queens. It’s a massive undertaking that you can follow in pictures by clicking here.

(via Boing Boing)

Image credits: Photographs by Metropolitan Transportation Authority and Patrick Cashin