Photos and captions by Jake Dobkin at Gothamist.com

Looking south from the 7-story stairwell leading into the current site, at 92nd and 2nd Avenue. Notice the boring machine on the right leading into the southbound tunnel. (Jake Dobkin)

Looking down the short stretch of current tunnel- digging at 100ft per day, the machine should reach the 63rd Street end by next year, at which point it will return to this spot to dig the Northbound tunnel. (Jake Dobkin)

Adi, the boring machine, has been in use in projects around the city for more than thirty years, including the digging of the Brooklyn Water Tunnel. She's named after the granddaughter of the current president of the MTA's construction authority. (Jake Dobkin)
Tags: 2nd Avenue, Gothamist, Jake Dobkin, Metropolitan Transportation Authority, MTA, New York, NY, NYC, Subway