Roald Engelbregt Gravning Amundsen (July 16, 1872 – c. June 18, 1928) was a Norwegian explorer of polar regions. He led the first successful Antarctic expedition to the South Pole between 1910 and 1912. He disappeared in June 1928 while taking part in a rescue mission. With Douglas Mawson, Robert Falcon Scott, and Ernest Shackleton, Amundsen was a key expedition leader during the Heroic Age of Antarctic Exploration.