Mount Siple rises to 3110 m and forms the high point of Siple Island in Marie Byrd Land off the coast of Antarctica. This aerial view is from the west, with dark-colored open water in the foreground and pack-ice-filled Pankratz Bay at the far right. Mount Siple has the largest exposed volume of volcanoes in this part of Antarctica because it lies outside the continental ice sheet. The exposed rock surface along the coast to the right of center is the young satellitic tuff cone of Lovill Bluff. U. S. Navy photo TMA 1627 F33 088, 1985.