Onpho Spa is situated 12 km northwest of Kyongsong. It is a hydrocarbon-sulfuric acid-natrium spa. It is also called a silica spa because of the rare minerals it contains. The temperature is 57oC. The spa treats arthritis, neuralgia, high blood pressure, women's diseases, poisoning from gas or lead, sequelae of operations, duodenal ulcer, gastritis, etc. Onpho features an excellent health resort with the Qnpho Rest House.