This is one of two Rodman cannons still in place at Fort Foote outside Washington D.C.
They weigh almost 25 tons each unmounted and required 50 lbs of black powder to fire cannon balls 25 inches across and weighing 600 lbs. To get this picture, I had to hold the camera over my head, as the mounted cannon is significantly taller than I am.

Other than the granite cannon mounts, not much else of this Civil War earthen fort survives. The Potomac River, over which the Rodmans once stood watch, is no longer visible from their post, as forest has grown up along the ridge. The Fort is so eroded and overgrown that the Rodmans seem to stand, almost pristine, in the middle of a forest, with nothing but the empty mounts for their missing siblings to indicate that they were not simply dropped from the sky into the Maryland woods.

Shot with a full spectrum modified Canon R6ii using a dual bandpass blue/infrared filter and a vintage Asahi Takumar 17mm f/4 fisheye.