Trans-Karakoram Tract

The Trans-Karakoram Tract (Chinese: 喀喇昆仑走廊; pinyin: Kālǎkūnlún zǒuláng), also known as the Shaksgam Tract (Urdu: شکسگام, romanized: Shaksgām), is a disputed area of approximately 5,200 km² (2,000 sq mi) north of the Karakoram watershed, including the Shaksgam valley. The tract is administered by China as part of its Taxkorgan and Yecheng counties in the Xinjiang Uyghur Autonomous Region. Although the Shaksgam tract was never under the control of Pakistan since 1947, in the 1963 Sino-Pakistan Agreement, Pakistan recognized Chinese sovereignty over the Shaksgam tract, while China recognized Pakistani sovereignty over the Gilgit Agency, and a border based on actual ground positions was recognized as the international border by China and Pakistan. It, and the entire Kashmir region, is claimed by India.

Most of the tract is composed of the Shaksgam Valley and was formerly administered as part of Shigar, a district (formerly a tehsil) in the Baltistan region. A polo ground in Shaksgam was built by the Amacha Royal family of Shigar, and the Rajas of Shigar used to invite the Amirs of Hotan to play polo there. Most of the names of the mountains, lakes, rivers and passes are in Balti/Ladakhi, suggesting that this land had been part of Baltistan/Ladakh region for a long time.

The tract is one of the most inhospitable areas of the world, with some of the highest mountains. Bounded by the Kunlun 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.