Question: The namesake of Amundsen Bay reached the South Pole in what year?

full_context: Document 1: Amundsen Coast: Amundsen Coast is that portion of the coast to the south of the Ross Ice Shelf lying between Morris Peak, on the east side of Liv Glacier, and the west side of the Scott Glacier. Named by New Zealand Antarctic Place-Names Committee in 1961 for Captain Roald Amundsen, the Norwegian explorer who led his own expedition in 1910–12 to the Antarctic. Setting up a base at Framheim at the edge of the Ross Ice Shelf, he sledged southward across the shelf and discovered a route up the Axel Heiberg Glacier along this coast to reach the polar plateau. He was the first to reach the South Pole, December 14, 1911.
Document 2: Mount Bjaaland: Mount Bjaaland ( ) is a rock peak (2,675 m), the southeasternmost summit of the massif at the head of Amundsen Glacier, in the Queen Maud Mountains. In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen. Amundsen named one of them for Olav Bjaaland, a member of the party. The peak described was mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photography, 1960-64. For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names (US-ACAN) has selected this feature to be designated Mount Bjaaland. Other peaks in the massif have been named for members of Amundsen's South Pole Party.
Document 3: Robert Peary: Rear Admiral Robert Edwin Peary Sr. (May 6, 1856 – February 20, 1920) was an American explorer and United States Navy officer who made several expeditions to the Arctic in the late 19th and early 20th centuries. He is best known for claiming to have reached the geographic North Pole with his expedition on April 6, 1909.
Document 4: Mount Amundsen: Mount Amundsen is a nunatak lying east of Denman Glacier, about 11 nautical miles (20 km) northeast of Mount Sandow. It was discovered by the Western Base Party of the Australasian Antarctic Expedition (1911–14) under Mawson, and named by Mawson for Roald Amundsen, the Norwegian polar explorer, who was the first to attain the South Pole.
Document 5: Casey Bay: Casey Bay is a large Antarctic bay indenting the coast of Enderby Land between Tange Promontory and Dingle Dome. The feature was observed from Australian National Antarctic Research Expeditions aircraft in 1956. It was named by the Antarctic Names Committee of Australia for the Rt. Hon. Richard G. Casey (later Lord Casey), Australian Minister for External Affairs, 1951–60.
Document 6: Amundsen's South Pole expedition: The first expedition to reach the geographic South Pole was led by the Norwegian explorer Roald Amundsen. He and four others arrived at the pole on 14 December 1911, five weeks ahead of a British party led by Robert Falcon Scott as part of the Terra Nova Expedition. Amundsen and his team returned safely to their base, and later learned that Scott and his four companions had died on their return journey.
Document 7: Amundsen Bay: Amundsen Bay, also known as Ice Bay, is a long embayment 24 mi wide, close west of the Tula Mountains in Enderby Land, Antarctica. The bay was seen as a large pack-filled recession in the coastline by Sir Douglas Mawson on January 14, 1930. Seen by Captain Hjalmar Riiser-Larsen in charge of a Norwegian expedition during an airplane flight on January 15 and subsequently mapped nearer its true position by the Norwegians. The bay was mapped in detail by an Australian National Antarctic Research Expeditions party landed by aircraft in 1956 and another landed by launch from "Thala Dan" in February 1958. It was named by Mawson after Roald Amundsen, the Norwegian explorer who was first to reach the South Pole.
Document 8: Mount Wisting: Mount Wisting ( ) is a rock peak (2,580 m), the northwesternmost summit of the massif at the head of Amundsen Glacier in the Queen Maud Mountains. In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen. Amundsen named one of them for Oscar Wisting, a member of the party. The peak described was mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photography, 1960-64. For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names (US-ACAN) has selected this feature to be designated Mount Wisting. Other peaks in the massif have been named for members of Amundsen's South Pole Party.
Document 9: Polheim: Polheim ("Home at the Pole") was Roald Amundsen's name for his camp (the first ever) at the South Pole. He arrived there on December 14, 1911, along with four other members of his expedition: Helmer Hanssen, Olav Bjaaland, Oscar Wisting, and Sverre Hassel.
Document 10: Roald Amundsen's South Pole Journey: Roald Amundsen's South Pole Journey (Norwegian: "Roald Amundsens sydpolsferd" ) is a Norwegian documentary film that features Roald Amundsen's original footage from his South Pole expedition from 1910 to 1912. The film was seen for the first time in 1912 and it was used by Amundsen for his traveling lectures.
Document 11: Norge (airship): The Norge was a semi-rigid Italian-built airship that carried out the first verified trip of any kind to the North Pole and likely the first verified overflight on 12 May 1926. It was also the first aircraft to fly over the polar ice cap between Europe and America. The expedition was the brainchild of polar explorer and expedition leader Roald Amundsen, the airship's designer and pilot Umberto Nobile and American explorer Lincoln Ellsworth, who along with the Aero Club of Norway, financed the trip which was known as the Amundsen-Ellsworth 1926 Transpolar Flight.
Document 12: Mount Hassel: Mount Hassel ( ) is a rock peak 2,390 m high, the northeasternmost summit of the massif at the head of Amundsen Glacier, in the Queen Maud Mountains of Antarctica. In November 1911, a number of mountain peaks in this general vicinity were observed and rudely positioned by the South Pole Party under Roald Amundsen. Amundsen named one of them for Sverre Hassel, a member of the party. The peak described was mapped by the United States Geological Survey from surveys and U.S. Navy aerial photography, 1960–64. For the sake of historical continuity and to commemorate the Norwegian exploration in this area, the Advisory Committee on Antarctic Names has selected this feature to be designated Mount Hassel. Other peaks in the massif have also been named for members of Amundsen's South Pole Party.
Document 13: Edward VIII Plateau: The Edward VIII Plateau is a dome-shaped, ice-covered peninsula between Magnet Bay and Edward VIII Bay. It was probably seen by personnel on the RSS "William Scoresby" in 1936, and mapped from aerial photos taken by the Lars Christensen Expedition, 1936-37, and named Gulfplataet (the gulf plateau). It was renamed "King Edward Plateau" by ANCA, but the form Edward VIII Plateau has been approved by the Advisory Committee on Antarctic Names (US-ACAN) to be consistent with the names of nearby Edward VIII Bay and Ice Shelf.
Document 14: Comparison of the Amundsen and Scott Expeditions: Between December 1911 and January 1912, both Roald Amundsen (leading his South Pole expedition) and Robert Falcon Scott (leading the Terra Nova expedition) reached the South Pole within a month of each other. But while Scott and his four companions died on the return journey, Amundsen's party managed to reach the pole first and subsequently return to their base camp at Framheim without loss of life, suggesting that they were better prepared for the expedition. The contrasting fates of the two teams seeking the same prize at the same time invites comparison.
Document 15: Roald Amundsen: Roald Engelbregt Gravning Amundsen (] ; 16 July 1872 – c. 18 June 1928) was a Norwegian explorer of polar regions. As the leader of the Antarctic expedition of 1910–12, which was the first to reach the South Pole, on 14 December 1911, he was a key expedition leader during the Heroic Age of Antarctic Exploration. In 1926, he was the first expedition leader for the air expedition to the North Pole, making him the first person, without dispute, to reach both poles. He is also known as having the first expedition to traverse the Northwest Passage (1903–06) in the Arctic.
ground_truth: 1911