Ladakh is a region in the east, between the Kunlun mountain range in the north and the main Great Himalayas to the south. Main cities are Leh and Kargil. It is under Indian administration and is part of the state of Jammu and Kashmir. It is one of the most sparsely populated regions in the area and is mainly inhabited by people of Indo-Aryan and Tibetan descent. Aksai Chin is a vast high-altitude desert of salt that reaches altitudes up to . Geographically part of the Tibetan Plateau, Aksai Chin is referred to as the Soda Plain. The region is almost uninhabited, and has no permanent settlements.