계곡의 물이 흐르는 서쪽 성벽에 수구가 있었던 것으로 보이며, 방어를 목적으로 쌓은 성이라 남문이 없다.
It seems that there was a mouth of the watercourse on the western wall of the valley where the water flows. And it doesn't have the south gate because it was built for defense.