Sost or Sust is a town in Gojal, Upper Hunza, Gilgit–Baltistan, Pakistan. It is the keep going town inside Pakistan on the Karakoram Highway before the Chinese outskirt. It is raised 2,800 meters above ocean level. The town is a significant spot on the roadway for all traveler and freight transport since all traffic crossing the Pakistan-China outskirt goes through this town; the Pakistani migration and traditions offices are based here. Pakistan and China have opened fringe for exchange and the travel industry at Khunjerab.
The Main dialects spoken here is Wakhi and Brushki. The Silk Route Dry Port began its business activities at the port Sost (Upper Hunza) close Khunjarab pass Gilgit-Baltistan. Yearly exchange among China and Pakistan has expanded from under $2 billion out of 2002 to $6.9 billion, with an objective of $15 billion by 2014. Sost dry port is the principal formal port at the China-Pakistan fringe, encouraging traditions freedom and different conventions for products moving from the city of Kashgar and the encompassing Xinjiang independent district in China to the business focuses of Pakistan. The town is associated by the Karakoram Highway to Gulmit, Aliabad, Gilgit and Chilas on the south and the Chinese urban areas of Tashkurgan, Upal and Kashgar in the north.