The abandoned gun emplacements at Fort Worden State Park in Port Townsend, WA are a great location for finding interesting artifacts. I really liked the moss that was growing around this one retaining ring (not the correct military term, I’m sure). It was interesting partly because of a whole wall full of these rings, this was the only one with a patch of moss around it. Must be some difference in the makeup of the cement in that location.
Camera: Nikon D850 Lens: Nikkor 28-300mm set at 160mm ISO 400 1/400 sec f/5.6