Seongsan Ilchulbong (Sunrise Peak) is a 182-metre tuff cone rising from Jeju's eastern coast, formed thousands of years ago by Surtseyan-type hydromagmatic activity in shallow seas, and inscribed in 2007 as a UNESCO World Natural Heritage Site. A 30-minute stair climb leads to the rim of the bowl-shaped crater, with panoramic ocean views from the top — best at sunrise, hence the name. Haenyeo women divers perform on the beach below. A signature Jeju Island stop for Muslim travellers, with halal-friendly options accessible from Seongsan harbour and Udo Island ferries departing from the foot of the peak. Modest entry fee.
