Military personnel inside the bunker would use binoculars and compasses to scout for enemy ships. If the military personnel would discover enemy ships, they would then send the coordinates of the enemy vessel to a central command post. Other observation stations in the area would then do the same, thus allowing the central command post to triangulate a ship's exact location.
According to Slate.com, the Bunkers were abandoned in 1949 after the invention and implementation of modern missile defense systems. Sometime after that, the property was purchased by a private owner. Despite the bunker being on private property, curious minds still brave the dangerous terrain to get a closer look at the Devil's Slide Bunker. According to KRON News, there is no hiking trail that allows access to the abandoned bunker. Visitors must walk alongside the road, where there are posted no parking signs, and walk alongside the road, right past the no pedestrians sign. Despite these warnings, there are no posted signs that say no trespassing on the actual property where the Devil's Slide Bunker sits.