Tag: Raven Rock Mountain Complex

The Underground Pentagon

Fairfield, Pennsylvania 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 …

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