Altun Shan 🏔️ Overview The Altun Shan, also widely known as the Altyn-Tagh, Altun Mountains, A’erjin Shan, or A-erh-chin Mountains, is a vast and exceptionally remote mountain range in northwestern China. Stretching across parts of Xinjiang, Qinghai, and Gansu, the mountains form one of the great geographic boundaries along the northern edge of the Tibetan …