Situated to the east of Jeju Port, Sarabong is a main Oreum (Jeju dialect for “a small volcanic mountain”) that separates Jeju City from the sea. From the top of Sarabong, visitors can see the ocean to the north and magnificent Hallasan Mountain to the south. Time your hike to reach the top in the late afternoon to catch the reddish glow of the sunset glittering off the ocean.Resembling a horseshoe and adorned with lush nut pine trees, Sarabong is a parasitic volcano with numerous scoria (macrovesicular volcanic rocks). Nearby Sarabong Park has numerous fitness facilities and is a favorite among visitors who enjoy taking walks. At the peak of Sarabong is Mangyangjeong Pavilion. Designated as Jeju Monument No.23, Bongsudae (a fire signal site that was once used to send warnings to other areas) is located in the north of Sarabong and has been preserved in its original form; to the north of Bongsudae is Sarasa Temple (aka Taegojong) overlooking the sea. The manned lighthouse Sanji, the first of its kind on Jeju Island, sits on the cliff near Sarasa Temple.