A total amount of square 2.5 × 10⁸ m³ of large ancient landslide was found, Northwest  Yunnan Province. The main and minor scarp are limestone cliffs with a height of 5~30 m. In the sliding bed development of varying scale gullies, and covered by the slope sediments with vegetation, talus and separate giant rock. The landslides once dammed Jinsha River, and on the left bank can still see the raised residue landslide dam, and the dam is about 180 × 10⁴ m³. The events of landslides blocked river formed a continuous distribution ancient lake deposits along the length of 46 km in the upstream.