Back Yard, NATO military bunker in Grezzana, Italy.
Back Yard is an underground military bunker carved into Mount Vicino with three Y-shaped tunnels containing command rooms, dormitories, kitchens, and water storage. The facility was entirely self-contained and equipped with multiple independent systems for sustained operation.
Built in 1958 as a strategic NATO command center under the designation SITE A, the bunker served as a key base for Allied land forces in Southern Europe until 2000. It formed part of the Western alliance's Cold War deterrence system.
The bunker reflects Cold War military engineering, incorporating advanced filtration systems and four power generators to maintain independent operations.
Access requires advance permission from Grezzana municipal authorities who carry out regular security inspections. It is advisable to contact the local administration before visiting to clarify current conditions.
The facility maintained 24-hour operational readiness throughout its service, with 80 percent of its protection derived from maintaining complete secrecy.
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