On the top wall of Fort Morgan’s Battery Duportail looking out to the Gulf of Mexico. The amphitheater looking on the left is where one of the two 12-inch breech loading rifles known as “Disappearing Guns” once stood. Each gun used 268 pounds of explosive to fire a 1,046 pound shell up to 8 1/2 miles. Fort Morgan stands guard where the bay meets the Gulf of Mexico. The fort played a significant role in the Battle of Mobile Bay during the American Civil War.