CINCPAC-CINCPOA Bulletin No. 136-45 / Pict30-2 Defense Installations on Iwo Jima 10 June 1945
Front view of one of the 140 mm (14 cm) CD guns casemated at the foot of Mt. Suribachi. They were constructed of reinforced concrete about 4 ft. thick and tunnels leading from the rear into the base of the mountain and connecting eadh installation. Thes