The Okgwangsan Jade mine (also known as 'Chuncheon Yeonok Gwangsan') in Geumokdong valley in Chuncheon-si, Gangwon-do, is the only jade mine in Korea and the only white jade mine in the world. Built in 1972, the original plan was solely for a jade mining facility. It now offers tours of the caves and even a steam sauna experience.On one side is a sauna room and on the left is a cave experience center. Along both sides of the cave are various jade formations leading to a long platform where visitors may stop for a break. At the end of the tunnel, visitors can sample Okjeongsu ground water gathered from inside the cave. The water’s unique taste brings people from all over who claim it is effective in treating hemorrhoids, constipation, and indigestion. A gift shop also offers a wide range of jade goods at discounted prices including rings, necklace, and even beds as well as a restaurant serving foods made with Okjeongsu water.