Its southernmost region is called the Ala Shan and the Tarim basin to its west lies across the Tien Shan mountains.
This region is bordered on the far northeast by the Kerulen River which empties into Hulun Lake. Parts of it once saw the breeding of wild horses known as takhi, while even farther north in the same country is the Selenge River and its tributary, the Orhon. This area is bordered by the Sayan mountains and the Yablonoi to the north, while the Greater Khingan mountains lay to the east. Its southernmost region is called the Ala Shan and the Tarim basin to its west lies across the Tien Shan mountains. Mostly composed of bare rock, for 10 points, name this huge desert which spans southern Mongolia and northern China.
This region is bordered on the far northeast by the Kerulen River which empties into Hulun Lake.
{Gobi }Desert