Portrait photograph of Roald Amundsen; ca. 1907
Roald Amundsen led the Antarctic expedition of 1910–12 which was the first to reach the South Pole, on December 14th, 1911.
In 1926, he was the first expedition leader for the air expedition to the North Pole. Amundsen is recognized as the first person, without dispute, as having reached both poles. He is also known as having the first expedition to traverse the Northwest Passage (1903–06) in the Arctic.