Introduction to the protected area: The average altitude of Hoh Xil is more than 4,600 meters, with the highest altitude being 6,860 meters. The central part of the area is low and gentle, the west is high and the east is low. The basic landform types include large and medium undulating mountains and extremely high mountains on the north and south edges. The vast area is composed of medium and small undulating mountains, high-altitude hills, terraces and plains.