Sarabo is a parasitic volcano nature reserve near Jeju Airport and Jeju Port, covered in haesong pines. A long coastal walking path runs along the cliffs, and the summit looks out over the sea, Hallasan, and downtown Jeju. Sabong Nakjo, which colors the sea with red sunset light, is counted among the Yeongjusingyeong of Jeju. A horseshoe-shaped crater opens to the northwest, with red clusters remaining inside.