Sugar Grove Naval Communication Center, West Virginia
The Sugar Grove Naval Communication Center is a US Navy communications facility located in the mountains near Sugar Grove, West Virginia, approximately 150 miles southwest of Washington, D.C. The facility is notable for housing an underground installation operated on behalf of the National Security Agency (NSA), making it one of the most prominent examples of an intelligence agency operating a clandestine subterranean facility beneath military surface cover.
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Intelligence Community Operations
Richard Sauder and other researchers have documented that the Navy facility at Sugar Grove includes a deep underground installation run by the Navy for the NSA's signals intelligence collection purposes. This arrangement — a naval base providing cover for an NSA-controlled underground facility — is one of several documented instances of intelligence community agencies using military infrastructure as cover for independent covert operations.
The Sugar Grove installation is cited by UAP Gerb alongside the Warrenton Army Training Center (CIA) as establishing a precedent for intelligence agencies operating hidden underground facilities beneath military surface installations. This pattern supports the analysis that UFO legacy programs could similarly occupy subterranean installations beneath conventional-appearing military bases.