Raven Rock Mountain Complex
The Cold War-era “underground Pentagon” is a sprawling subterranean hideaway for the Defense Department.
The Cold War-era complex is a sprawling subterranean hideaway for the Defense Department.
Take a slight detour off Pennsylvania Route 16 near the Maryland state line and you’ll notice the rolling farmland and bucolic rural homesteads give way to a double wall of razor wire, with tall antenna masts visible atop the hillside beyond.
Officially referred to by a handful of monikers including the Raven Rock Mountain Complex, Site R, and the Alternate Joint Communication Center, the facility was best described by the local press half a century ago: the “Underground Pentagon.”