It lies in the Sobaek Mountains, and it was a border between Jinhan and Mahan in Proto-Three Kingdoms period and Silla and Baekje in Three Kingdoms period. Now it is a border between Chungcheongbuk-do and Gyeongsangbuk-do, Hoseo and Yeongnam. Korail Gyeongbu Line, Route 4 and Gyeongbu Expressway pass through it, and it is the highest point in Gyeongbu Line. There is a meteorological observatory controlled by Daejeon Area Meteorological Administration. As a name of administrative divisions, it is one of myeon in Yeongdong-gun and ri in Chupungnyeong-myeon.