Guge was an ancient dynastic kingdom in Western Tibet. The kingdom was centered in present-day Zanda County, Ngari Prefecture, Tibet Autonomous Region. At various points in history after the 10th century AD, the kingdom held sway over a vast area including south-eastern Zanskar, upper Kinnaur district, and Spiti Valley, either by conquest or as tributaries. The ruins of the former capital of the Guge kingdom are located at Tsaparang in the Sutlej valley, not far from Mount Kailash and 1,200 miles (1,900 km) west from Lhasa.

Tibet, or Greater Tibet, is a region in the central part of East Asia, covering much of the Tibetan Plateau and spanning about 2,500,000 km2 (970,000 sq mi). It is the homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as the Monpa, Tamang, Qiang, Sherpa and Lhoba peoples and, since the 20th century, considerable numbers of Han Chinese and Hui settlers. Since the annexation of Tibet by the People's Republic of China in 1951, the entire plateau has been under the administration of the People's Republic of China. Tibet is divided administratively into the Tibet Autonomous Region, and parts of the Qinghai and Sichuan provinces. Tibet is also constitutionally claimed by the Republic of China as the Tibet Area since 1912. Tibet is the highest region on Earth, with an average elevation of 4,380 m (14,000 ft). Located in the Himalayas, the highest elevation in Tibet is Mount Everest, Earth's highest mountain, rising 8,848.86 m (29,032 ft) above sea level.