Introduction to Sanqu Mountain: Sanqu Mountain Scenic Area is an important part of "Changshan National Geopark" and "Changshan National Forest Park". It is a limestone karst landform, which is different from the prime-age karst landform of Yunnan Stone Forest. What is clear is that the Sanqushan karst is in its infancy and is mainly composed of peak clusters, with micro-landforms of stone buds and karst ditches.