This is a Hipmunk post from Jodi Ettenberg of Legal Nomads.
The 2nd Avenue Subway project has been on the table for many many years. It was first proposed in 1929  but has found itself stopped and started and shelved ever since. In 2007, the 2nd Avenue line construction began in earnest, and the MTA has just released these photographs from April 2013, taken underneath 86th street.
We thought it would be interesting for travelers and locals alike to see what lies just beneath the metropolis. Photos are all from the MTA’s Flickr feed. For the full set from the 86th Street Station, see here.