Gobi Desert from , and those of the ranges from higher, though in a few cases they reach altitudes of . The elevations do not form continuous chains, but make up a congeries of short ridges and groups rising from a common base and intersected by a labyrinth of ravines, gullies, glens and basins. But the tablelands, built up of the horizontal red deposits of the Han-gai (Obruchev's Gobi formation) which are characteristic of the southern parts of eastern Mongolia, are absent here or occur only in one locality, near the Shara-muren river. They are greatly intersected by gullies or dry watercourses.
Hami Desert to take their place, the country went out of cultivation and eventually became the barren desert it is now. During the Hun time, and probably into the Middle Age, the present desert was a lush steppe grassland able to support sustainable seasonal nomadic horse husbandry on a large scale. Hami Desert The Desert of Hami (, Uyhgur: Қумул Қумлуқи) is a section of the Gobi Desert in Xinjiang, China that occupies the space between the Tian Shan system on the north and the Nan-shan Mountains on the south, and is connected on the west with the Desert of Lop. "This