The undisputed summit record, though not the altitude record, was broken by 8 meters on June 14, 1911, when the Scottish chemist, explorer, and mountaineer Alec Kellas together with the Sherpas Sony and Tuny's brother climbed the high Pauhunri on the border of Sikkim and Tibet. Until the late 20th century this mountain was thought to be only , so this record was not realized at the time.