Gilgit-Baltistan through the region has been proposed; see Khunjerab Railway for details. At the last census (1998), the population of Gilgit-Baltistan was 870,347. Approximately 14% of the population was urban. The estimated population of Gilgit-Baltistan in 2013 was over 2 million. The population of Gilgit-Baltistan consists of many diverse linguistic, ethnic, and religious sects, due in part to the many isolated valleys separated by some of the world's highest mountains. The ethnic groups include Shins, Yashkuns, Kashmiris, Kashgaris, Pamiris, Pathans, and Kohistanis. A significant number of people from Gilgit-Baltistan are residing in other parts of Pakistan, mainly in Punjab and Karachi.
Trans-Karakoram Tract inhospitable areas of the world, with some of the highest mountains. Bounded by the Kun Lun Mountains in the north, and the Karakoram peaks to the south, including Broad Peak, K2 and Gasherbrum, on the southeast it is adjacent to the highest battlefield in the world on the Siachen Glacier region which is controlled by India. Historically the people of Hunza cultivated and grazed areas to the north of the Karakoram, and the Mir of Hunza claimed those areas as part of Hunza's territories. Those areas included the Raskam Valley, north of the Shaksgam Valley. In 1889 the first expedition