Photo taken from inside the Fire Control Station at the summit of Diamond Head. From 1908-1950, there were artillery pieces at Fort Ruger, before Diamond Head became a National Natural Landmark. At the summit was the "lookout post" where the gunfire was directed, by spotters using large binoculars mounted on steel posts. This "Fire Control" station was inside a fortified bunker looking out over the ocean. In the photo, you can see through the small opening in the concrete, and down to the hotels on Waikiki Beach below.