Claim: The Bailey–Morshead exploration of Tsangpo Gorge is part of the Yarlung Tsangpo River, the longest river of Tibet, south of Himalaya.
Evidence: The Bailey–Morshead exploration of the Tsangpo Gorge was an unauthorised expedition by Frederick Bailey and Henry Morshead in 1913 which for the first time established the definite route by which the Tsangpo River reaches the sea from north of Himalaya, through the Tsangpo Gorge. North of Himalaya, the Yarlung Tsangpo River flows east through the Tibetan Plateau and then turns south into a series of massive gorges in Himalayan mountains. It is the longest river of Tibet.