Nachalo Canyon is a section of the Nujiang Canyon, which starts in Qiunna barrel north of Bingzhongluo, and extends about 67 kilometers upstream, at the junction of Yungui Plateau and Qinghai-Tibet Plateau. The Nachalo Canyon, located in the Sanjiang parallel area of the world natural heritage, has maintained a primitive natural appearance due to less human interference. This canyon is located in the no man's area of the border of Tibet. The mountains are dense and the canyon is deep. It belongs to the most beautiful and essence part of the Nujiang Grand Canyon. The virgin forest is dense and the waterfalls are numerous. It is a spectacular scenery along the canyon. It is also the most sinister part.