Numerous bunkers line the coastal cliffs near the entrance to the Golden Gate Strait, last in use during WWII.

This photo was taken by a Kowa/SIX medium format film camera and KOWA 1:3.5/55 lens with a Kowa L39•3C(UV) ø67 filter using Kodak Ektar 100 film, the negative scanned by an Epson Perfection V600 and digitally rendered in Photoshop.