Titan II Abandoned Silo Complex 571-4
Access This access portal was the main entrance into the Titan-II missile complex north of Sonoita, east of Sahuarita, Arizona. The crew would also pass through this portal to access the missile silo itself. Normally only the top few inches of this structure would be visible, but for some reason about 25 feet of soil has been removed from this site, exposing all of the underground structures (except the silo itself, which was destroyed when the missile was removed around 1983).
Access and Command center
Access and Command center, Santa Rita Mnts behind