Yarlung Zangbo Grand Canyon starts from the Daduka Village of Mainling County, at the altitude of 2280 meters, in the north, to the Baxika Village of Motou County, at the altitude of 115 meters, in the south. Yarlung Zangbo Grand Canyon has a length of 504.9 kilometers, with an average depth of 2268 meters, and the deepest is 6009 meters. The average altitude of the canyon is 3000 meters and it is the biggest canyon in the world. At the Grand Canyon, there are glaciers, cliffs, steep slopes, landslides and the surfy rivers, all of which interlock together, making the circumstance odious. Many sects of the Grand Canyon haven't been set foot in yet, it is not hyperbole to say that it is the last secret place on the earth and rare blank section of geological work.
In 19991 and 1993, the CSEA made two explorations and inspections to Yarlung Zangbo Grand Canyon. In 1994, Liu Dongsheng as well as some other scientists assured that Yarlung Zangbo Grand Canyon is the biggest canyon in the world, which defeated the Grand Canyon , 2133 meters deep and 370 kilometers long, and the Kererka Grand Canyon, 3203 deep and 90 kilometers long. When the Xinhua News Agency reported this news, people around the world got shocked. From the October to November of 1998, the the expedition team went through the Grand Canyon, measuring it and definiting the position of its top of the world. At the same time, they discovered 4 waterfalls, Rongza Waterfall, Qiugudulong Waterfall and the Zangbubadong Waterfall, among which, the Zangbubadong waterfall includes NO.1 and NO.2 Zangbubadong waterfalls. Zangbubadong waterfall is the biggest, with a height of 35 meters and width of 62.57 meters. In the September of 1998, the state council of the people's republic of china authorized that; the scientific name of the Grand Canyon is Yarlung Zangbo Grand Canyon (Yarlung Zangbo Daxaigu).
You may take a bus from Lhasa to Nyingchi, and the earliest one starts off at 8 o'clock. It is 633 kilometers from Lhasa to Nyingchi, and the price of the ticket is 155 Yuan. Then you may go from Bayi Town to Pailong, and from Pailong to Zhaqu. At zhaqu, you may see the big turn of Yarlung Zangbo River. Then you may go from Zhaqu to Pailong, during which you may visit the Moinba nationality village and enjoy the primitive forest. At last, you may take a bus from Pailong to Mailing, and from Mailing to the Jiacha of Sannan, during which you may have a good view of the beautiful scenery of Yarlung Zangbo Grand Canyon.
The best time for your traveling there is May to October, and you also may go to the Yarlung Zangbo Grand Canyon on foot from the beginning of June to the middle of October. After October, there will be strong snow, and Motuo would seal the mountain pass till the next year. And the best seasons for you to go to Motuo are April and Octobe, because there are few rainfalls in these two months, so there is no danger of landslide and collapse. While if you go there in June to August, there might be some dangers.