Mounigou Valley is located in Songpan County and contains Zhaga Waterfall along with the nearby Erdaohai National Park. There are rich natural resources in this area as well as some rare animals like the Giant Panda and the Canary Monkey. All these contribute to the dreamlike, otherworldly "fairyland" that the Chinese call Mounigou.
Zhaga Waterfall holds the reputation of being the most famous calcified waterfall in China. It stands 104 meters high and 35 meters wide, and the water speeds down at the rate of 23 meters per second.
In addition to Erdaohai and Zhaga Waterfall, this 5 km valley is home to Swan Lake, Feicui Lake, Rhinoceros Lake and more.
Zhaga Waterfall
There are many colorful pools and waterfalls in Zhaga Valley. The various sounds of waterfalls echo throughout the forest, creating impressive sprays and mists. 
Zhaga Waterfall is among the most beautiful waterfalls, but it also feels like the most supernatural and mysterious. It is the largest limestone waterfall in China, standing 93.2 meters (306 feet) high, 35 meters (38 yards) wide, and has an elevation of 3,270 meters (10,728 feet). In the upper ends of the waterfall is a lake, and in the lower end is a lakebed that has many levels, which resembles a staircase. When the waterfall rushes down the limestone steps, it creates a large spray and a roaring sound. On a sunny day, the waterfall’s cliffs sparkle with all colors of the rainbow.
When wandering along the path of the valley, you not only see numerous flowers in bloom, but also bamboo forest. It is in these bamboo forests that the pandas reside. Also along the 5 kilometer (3.1 mile) valley, you can find hundreds of colorful, intriguing pools of water, all various shapes and sizes.
Erdaohai National Park
Erdaohai National Park hides in a jungle and has an area of 6,800 square meters (1.68 acres). Visitors can get here by horse or on foot from the Zhaga Waterfall. The upper part of Erdaohai Lake is so clear that people can see little fishes swimming in the water. 
There are over 400 other lakes in the area, including Swan Lake and Ginseng Lake, and visitors can also explore some mysterious caves. Among these caves, the most impressive one is called Xuannu Palace.
There are many other things to see, including Tibetan Buddhist temples and Flower Lake.
Tibetan Buddhism is an essential part of the local residents' daily life. There are two main temples in this area: Xiaobao Temple and Hou Temple, which belong to Gulug (Yellow hat) of Tibetan Buddhism.
Flower Lake got its name because of the hundreds of blossoming flowers that grow on the surface on the lake, which change colors according to the season.
The Horseback riding tour is another attraction in Mounigou Valley. Since it started in 1982, more and more tourists choose this method to appreciate the amazing valley. Visitors have the option of staying in campsites or in small inns and can modify the tour according to their needs.
Tips:
1. Tibetans never eat donkey or dog, and in some places they do not eat fish.
2. Transportation: catch a coach at Chengdu’s West Gate Bus Station to Songpan County, and then change to a minibus to get to Mounigou Valley. It will take one and a half hours in total.
Admission Fee :
CNY70 (Zhaga Waterfall or Erdaohai Lake)
CNY100 (Both Zhaga Waterfalls and Erdaohai Lake)