Seongsan Ilchulbong in Seogwipo is a volcanic cone reached by a staircase path to the summit. From the top, Udo and the Jeju sea are visible at a glance, and on clear days Hallasan can be seen as well. The climb to the summit takes 15 to 25 minutes, and a round trip on foot takes about 40 minutes. The route to the top includes fairly steep sections and strong winds.