해발 800m 주변에는 비교적 평탄한 지형이 분지 형태를 이루는데, 금오산성이 있던 곳이어서 성안마을이라고 부른다.
Around 800m above sea level, the relatively flat topography forms a basin, and it is called Seongan Village because it was the place where Geumosanseong Fortress was located.