横断山脉
Daocheng County or Dapba in Tibetan (; ), historically Daoba (), is a county of western Sichuan Province, China, located in the eastern Hengduan Mountains. It is under the administration of the Garzê Tibetan Autonomous Prefecture with an overwhelmingly Tibetan population. Its latitude ranges from 27° 58' to 29° 30' N and longitude 99° 56' to 100° 36', and reaches in north-south extent and in east-west width, with elevations ranging from .