MILITARY BUNKER AT GREY WHALE COVE, CALIFORNIA
Photo credit: Aaron Spohn
Now abandoned this concrete bunker was part of a military triangulation system and observation site during World War II. Before the invention of radar, the military would use binoculars and compasses to track ships and relay their positions.
Today this derelict structure looks more like an AT-AT Walker crewed by skateboarding street artists. Cool!
Photo credit: Mark Loftin
Photo credit: Chris Orr
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