Mawson Peak. Mawson Peak is an active volcanic summit of the Big Ben volcanic massif on Heard Island, an Australian external territory in the Indian Ocean. With an elevation of 2,745 metres (9,006??ft), it is higher than any peak on the Australian mainland and, among Australian mountains, is surpassed only by mountains in the Australian Antarctic Territory. Mawson Peak and other volcanic features on Heard and McDonald Islands are Australia's only active volcanoes. The peak is named after the Australian Antarctic explorer Douglas Mawson.
