Tod, This looks like a very interesting place to visit. That breech section of the blown up naval gun looks like it was cast in South Boston, Mass by the Cyrus Alger Co. foundry. It most likely came from the large stock of captured cannon after the Gosport Navy Yard in Portsmouth, Virginia was seized by Confederate forces in 1861. Neither Mike nor I have seen a gun so thoroughly destroyed, except for a few which were blown up as the enemy approached. Do you know how this naval gun came to be in it's present condition?
Thanks,
Tracy and Mike