Sundamgyegok Valley (순담계곡)
Located 5 kilometers northwest of Cheorwon-gun Office, Sundamgyegok Valley is one of the most beautiful valleys among the branches of the Hantangang River. It offers fantastic scenery of fascinating rock formations, steep cliffs, and ponds. The valley is filled with abundant water, trimmed by rare naturally white sand. Also, the stream behind the valley attracts many rafters each year.