 Zayü County is located in an area of highly varying topography, lying just south of the Tibetan Plateau in the mountainous region east of the Himalayas where the Transhimalayas transition to the Hengduan Mountains.Specifically, Zayü straddles the southern parts of the Baxoila Range, the eastern parts of the Kangri Garpo mountains, and the eastern parts of the Mishmi Hills.Elevations generally decrease from northwest to southeast, with a maximal variation of