Jeju's Volcanic Wonderland
Jeju Island is geologically unique—a volcanic island that rose from the sea about 2 million years ago due to volcanic eruptions. The result: a surreal landscape of lava tubes, crater lakes, volcanic cones, and bizarre rock formations, declared a UNESCO World Natural Heritage in 2007.
- Hallasan: The extinct shield volcano (1,950 m) with the Baengnokdam crater lake at the summit. Five vegetation zones from subtropical to alpine.
- Manjanggul Lava Tube: 7.4 km long, one of the longest in the world. 1 km walkable. Stalactites, lava columns, underground lakes.
- Seongsan Ilchulbong (Sunrise Peak): A 182 m high volcanic crater right by the sea—like a natural fortress. The hike to the rim (30 min.) offers views over the crater and up to the offshore islands.
- Oreum (오름): Jeju has over 360 small volcanic cones—called "Oreum." Each is a short walk with panoramic views. The Darangshi Oreum and the Saebyeol Oreum are particularly beautiful.
- Jusangjeolli Cliffs: Hexagonal basalt columns standing like man-made structures on the coast—formed by slowly cooling lava.
