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Tenzing Norgay, also known as Sherpa Tenzing, achieved mountaineering fame by becoming, along with Edmund Hillary, one of the first two individuals to reach the summit of Mount Everest on May 29, 1953. He was a highly skilled Sherpa mountaineer and played a crucial role in numerous British expeditions to the Himalayas. His expertise and knowledge of the region were instrumental in the success of these expeditions.