Buried deep beneath the surface of the Denton countryside, a huge military installation lies abandoned and almost forgotten. This top-secret, three-story military complex has six hundred acres underground, miles of tunnels and hundreds of air shafts. Throughout the county, a network of regularly-spaced and heavily-filtered air shafts once connected the secret underground to the surface above. They drew fresh air in and pushed foul air out.
When the base closed in the late sixties, its ventilation system was dismantled. The fans, the motors and the buildings that housed them were all hauled away. The openings were sealed tight and each site was then covered up and camouflaged. Sometimes the deception was obvious and easy to read, sometimes not so obvious. Either way, the underground base was closed and its air shafts sealed tight and hidden from view.