The Yarlung Zangbo River originates from the middle section of the northern slope of the Himalaya Mountain with an elevation of more than 6,000 meters. It turns south suddenly in Mainling County and cuts the Himalaya Mountain into two sections. Then the river runs through a narrow passage between the two 7,000-meter-high peaks of Namjagbarwa and Jialabailei. Its flow averages 1,000 cubic meters per second year round.

In one section less than 1,000 meters, the drop is more than 300 meters and its current velocity is more than 18 meters per second. Here is the Yarlung Zangbo Canyon, the first one in the world. Standing by it, you will feel the fascination of the nature, including the precipitous cliffs, hot springs, waterfalls, primeval forests, rare plants and animals.

(It takes one month to go through the Yarlung Zangbo Canyon. From July to October is the season for entering the canyon.)