The altitude is 1,460m. Theyare distributedas moniliform on a huge boulder in the KayiertiRiver. There are more than 50 potholes in total. Individual potholesare round or elliptical, with a diameter of 0.3-0.8 m and a depth of 0.2-0.6 m. The deepest pothole is 1.10 mdeep and can penetrate through the boulder.They are potholes formed on the surface of biotite granite boulder through eroding continuously by swirled water flows carring with sand in flood periods.The boulder that develops potholes breaks the surface of water during normal river flow period, and saves river water and rain and appears red brown.