Site 2 of the 556th Strategic Missile Squadron, Plattsburgh. One of 12 Atlas F ICBM sites in NY and VT which ringed Plattsburgh Air Force Base during the Cold War. Near Swanton Site 3(http://virtualglobetrotting.com/map/40524/).
Military - Missile Sites, Military - Historic - Closed Facility
The silos were 174 feet deep and 54 feet in diameter. For a history of the squadron, see http://www.siloworld.com/DOWNLOADS/History%20Office%20Plattsburgh%20AFB%20%20556th%20SMS.pdf.