The Raven Rock Mountain Complex, also known as Site R and commonly referred to as 'The Rock,' is a significant U.S. military installation located near Blue Ridge Summit, Pennsylvania. This complex is renowned for its underground nuclear bunker, which has been described as an 'underground Pentagon.' The facility serves as an emergency operations center for multiple branches of the U.S. military, including the United States Army, Navy, Air Force, and Marine Corps.
Its primary function is to ensure the continuity of government and military operations in the event of a national emergency or attack. The complex is strategically located to provide a secure and resilient command center, capable of withstanding various threats and ensuring the survival of critical military functions.