Yuan Ye, Nankouzi, Xigua Village, Yanyuan Town. A well-preserved bandit cave in a deep mountain, which was used by bandits in those days to avoid capture. The cave is 5 meters high and 3 meters wide in the belly, and the outer wall still preserves the old pigments. In this mountain, the cave is a suspended cave with magnificent momentum, blue sky and white clouds, misty and picturesque, and you can see the white clouds one after another, which is a magical wonder. Tianquan county, which belongs to Ya 'an City, Sichuan Province, is located at the western edge of Sichuan Basin, at the eastern foot of Erlang Mountain, upstream of Qingyi River, and the Sichuan-Tibet Highway (National Highway 3 18) runs through the whole territory. The average annual rainfall is 1735.6 mm.