Tibet Autonomous Region lies in the southwestern part of Mainland China within the Qinghai-Tibet Plateau. Due to the high altitude of Tibet, it is crowned as the “Roof of the World” by the world. Tibet Autonomous Region in bounded to the east by Sichuan Province, to the south by and west by Myanmar, India, Bhutan, Sikkim and Nepal; to the north by Xinjiang Uygur Autonomous Region and Qinghai Province; by southeast by Yunnan Province. The overall area of Tibet is approximately 12 million square kilometer, which is 12.8% of the total interface area of China.
Tibet, which is blessed by the nature with unique topography, has three geographic parts, the west, the south and the east. The western part of Tibet which lies between Kunlun Mountain and Kangdese Mountain as well as Tonglha Mountain and Nyainqentanglha Mountain, is popularly known as North-Tibet Plateau. This mountainous area has making up almost two third of the total area of Tibet. The eastern part of Tibet which marked by a gradual decline in altitude is mainly made up by canyons. The southern part of Tibet is situated in between of Kangdese Mountains and Himalayas.