Sharpner's Pond Anti-Ballistic Missile Site
The Sharpner's Pond Anti-Ballistic Missile Site is a location in North Andover, Massachusetts, which was slated to be the site of a Perimeter Acquisition Radar facility for the Sentinel program. Initially, an access road and a large excavation for an underground power plant were constructed at the site.
Source: Wikipedia — Sharpner's Pond Anti-Ballistic Missile Site (CC BY-SA 4.0)