The petroglyphs (figures, pictures, and letters were made on the rocks along the mid-stream area of Naegokcheon Stream, which is a tributary of Taehwagang River. The upper and lower sides of the rocks contain petroglyphs that differ in the content and techniques used. The upper side contains petroglyphs made by means of chiseling. The inscriptions include geometric patterns, animals, and abstract human figures. There are concentric circles, with a round figure looking like the sun at the center,...