Wreckage of one of the buildings of the abandoned Nike missile base on Sweeney Ridge, in the Golden Gate National Recreation Area.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 18mm, ISO 400, f/8, shutter 1/250 sec. Exposure, contrast, saturation, highlights, and shadows adjustments in Aperture.