KCNA 5/21/2007 The Sokthang hot-spring in Onjong-ri, Yangdok County, South Phyongan Province is one of the famous spas in Korea. Hot spring gushes from different places in three zones and the temperature of the water is 78 degrees centigrade. The water contains mineral matters, hydrogen sulphide, metasilicic acid component, hydrogen carbonate ions and sodium ions. … Continue reading Sokthang Hot-Spring