Yangma Pass (样马垭口, Sheep Horse Pass) separates the main Haba summit from the East Peak, and the MIddle Lair Valley from Haba Muru Sanctuary. The pass provides access to the 1000-meter high face and its collage of icy couloirs, spires and rock walls, which will interest expert mountaineers.
The route to the pass begins at Haba Village and ascends on a good trail to a locked forestry cabin at 3,200 m. The trail continues to a waterless and cramped campsite at 3,600 m. This marks the end of the trail for pack animals.
Continuing on foot, the path ascends steeply along a ridge to about 3,900 m. then moves onto the steep canyon slope. What follows is a tough bushwhack to treeline at around 4,000 m. There, one meets a water pipe that leads down to Ennu Village in the valley far below. extends above the pass and collects water beneath the East Face. Following the pipe, or terrain nearby, ascend to the ridge crest at 4,300 m. The pipe turns and extends along the base of the East Face, collecting water for Ennu Village in the valley far below. The path next to the pipe is suitable for foot travel.