Introduction to the Seven-Star Back Sword: This scenic spot is located in the south of Kongshan Tianpen. On a hill with an area of ​​1 square kilometers, there are seven hills of different heights and shapes, the highest is about 120 meters. The short one is about 80 meters tall and looks like an old-fashioned lighting lamp used by farmers. Geologically, they belong to the karst peak cluster landscape, which is a kind of peaks with connected bases and conical tops developed in carbonate rock areas. Typical peak clusters develop in areas with deep terrain cuts and deeply buried groundwater.