The hook
A volcanic island south of the mainland built around Korea's highest mountain, ringed by black-rock coast, lava tubes, and craters, and home to the haenyeo, generations of women who free-dive for seafood without air tanks.
01Why it's worth it
Jeju is Korea's holiday island and its most distinctive landscape, an oval of volcanic rock crowned by Hallasan, a dormant shield volcano that is the country's highest peak and a fine day hike. Its volcanic origins are everywhere: long lava tube caves, the dramatic Seongsan Ilchulbong tuff crater rising from the sea, waterfalls, and coastlines of black basalt. The island also has a strong, matriarchal-flavoured culture of its own, most famously the haenyeo, older women who have long dived for abalone and shellfish on a single breath, a tradition now recognised and slowly fading. It is very popular with Korean and other Asian travellers, so the honeypots get busy, but the coast roads, the peak, and the quieter east and south reward exploration. It makes an easy, scenic break from the mainland cities.
02How to experience it
Rent a car to circle the island: hike or ride toward Hallasan, climb the Seongsan sunrise crater early, and walk a coastal stretch or a lava tube. Seek out a haenyeo diving demonstration or a seafood shack run by them. The quieter east and south beat the crowded central resorts.