Tags: Volcano.
Mount Overlord (73°10′S 164°36′E) is a very large mountain which is an extinct stratovolcano situated at the northwest limit of Deception Plateau 50 miles inland from the Ross Sea and just east of the head of Aviator Glacier in Victoria Land. Its asymmetrical cone is on the edge of a plateau above Aviator Glacier. While most of the cone is ice-covered Mount Overlord does have a 1.2-mile (.8 kilometer) diameter caldera.