Xinjiang is the largest political subdivision of China - it accounts for more than one sixth of China's total territory and a quarter of its boundary length. It is divided into two basins by Mount Tianshan. Dzungarian Basin is in the north, and Tarim Basin is in the south. Xinjiang's lowest point is the Turfan Depression, 155 metres below sea level (lowest point in the PRC as well). Its highest peak, K2, is 8611 metres above sea level, on the border with Kashmir.
Most of Xinjiang is young geologically, having been formed from the collision of the Indian plate with the Eurasian plate, forming the Tian Shan, Kunlun Shan, and Pamir mountain ranges. Consequently, Xinjiang is a major earthquake zone. Older geological formations occur principally in the far north where the Junggar Block is geologically part of Kazakhstan, and in the east which is part of the North China Craton.
Xinjiang has within its borders the point of land remotest from the sea (Lat. 46 degrees 16.8 minutes N, Long. 86 degrees 40.2 minutes E) in the Dzoosotoyn Elisen Desert, 1,645 miles (2648 km) from the nearest coastline (straight-line distance).
The Tian Shan mountain range marks the Xinjiang-Kyrgyzstan border at the Torugart Pass (3752 m). The Karakorum highway (KKH) links Islamabad, Pakistan with Kashgar over the Khunjerab Pass.
The Eurasian pole of inaccessibility, the point on land farthest from any ocean, is located approximately 320 km (200 mi) from the city of Urumqi, within the boundary of Xinjiang.
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