Photo taken on July 23, 2009 shows aerial view of Yarlung Zangbo River in southwest China's Tibet Autonomous Region.(Xinhua/Geasang Dawa)

Photo taken on July 23, 2009 shows aerial view of Yarlung Zangbo River in Gonggar County, southwest China's Tibet Autonomous Region.(Xinhua Photo)

Photo taken on July 23, 2009 shows aerial view of Yarlung Zangbo River in southwest China's Tibet Autonomous Region.(Xinhua Photo)

Photo taken on July 23, 2009 shows aerial view of Yarlung Zangbo River in southwest China's Tibet Autonomous Region. (Xinhua Photo)

 With an average altitude of 4,500 meters, the Tibetan Mother River- Yarlung Zangbo is the highest in the world. It originates in glacial regions of the northern Himalayas, runs 2,057 kilometers through Tibet in western China, passes into India and finally meets the Indian Ocean in the Bay of Bengal.