It is located in Sonam-dong, Kaechon City, South Phyongan Province. It is a natural cave with fantastic scenery formed through the centuries-old process of the erosion of limestone by underground water.
It has more than 70 multifarious queer-looking scenic spots. They are divided into 16 sections such as Phokpho, Kiam, Solgyong, Surim, Pomul, Jangsu, Ryonggung, Phungnyon and so on.
