Jeju Island South Korea

Jeju Island: South Korea’s Volcanic Escape

Jeju is South Korea’s largest island and its most popular domestic holiday destination. Roughly 1.5 million people live here, and several million more visit each year, many arriving on flights that are among the busiest domestic routes in the world. The island’s appeal is legitimate: a dormant shield volcano at its centre, lava tube caves, black sand and white sand beaches, tangerine orchards covering the hillsides, and a culture distinct enough from mainland Korea that it maintains its own language (Jejueo, now spoken by very few people but still studied). The tourist infrastructure is solid, English signage is increasingly common, and getting around without Korean is manageable with basic preparation.

Hallasan National Park

Hallasan, at 1,950 metres, is the highest peak in South Korea. An extinct volcano with a crater lake at the summit, it is the island’s dominant geographical feature. Several hiking trails lead to or near the top; the Seongpanak and Gwaneumsa trails both reach the summit crater (Baengnokdam), while the Eorimok and Yeongsil trails reach the western slopes without going all the way up.

A few things to know before you go: the summit trails have cut-off times enforced by rangers. If you are not past a certain checkpoint by a specified time (roughly 12pm for summit trails, varying by season), you will be turned back. Start early. The Gwaneumsa trail is considered the most scenic but is longer and harder than Seongpanak. Carry enough water; the mountain is rarely cold enough in summer to suppress dehydration.

Manjanggul Lava Tube

One of the longest lava tube cave systems in the world, Manjanggul was formed by a lava flow that cooled and hardened on the outside while the molten interior continued flowing, leaving a hollow tunnel. About one kilometre of the 13-kilometre tube is open to visitors, lit and with a formed walking path. At the far end, a lava column roughly 7.6 metres tall is among the largest lava stalagmites known anywhere.

The cave is in Gimnyeong, on the northern coast, and takes about 45 minutes to walk through at a relaxed pace. It is a UNESCO World Heritage Site as part of the Jeju Volcanic Island and Lava Tubes designation. Entry is 4,000 KRW for adults.

Seongsan Ilchulbong (Sunrise Peak)

A tuff cone formed from an underwater eruption approximately 100,000 years ago, Seongsan Ilchulbong rises 182 metres above the eastern tip of Jeju. The crater bowl at the top is about 600 metres wide. The hike from the base takes about 20 minutes on a paved path and the view from the rim (and into the grassy crater bowl) is one of the island’s best.

The sunrise visits are genuinely popular, so popular that the car park fills before 5am on clear mornings in summer. If you want a quieter visit, go mid-morning on a weekday. The sea stacks and rocky coastline visible from the rim are as interesting as the crater itself.

The Haenyeo

Jeju’s haenyeo are the female free divers who have worked the coastal waters for centuries, diving without equipment to depths of 10 metres or more to harvest abalone, sea urchin, conch, and seaweed. There are still several thousand active haenyeo, though the practice is declining as younger generations pursue other work. UNESCO designated the haenyeo culture as an Intangible Cultural Heritage in 2016.

You can watch haenyeo working from various points along the coast, particularly around Udo Island and in Seongsan. The Haenyeo Museum in Gujwa is small but well-presented and covers the history and techniques without over-romanticising. Haenyeo-run seafood restaurants sell the day’s catch directly and are worth seeking out; abalone porridge is the traditional Jeju breakfast.

Food Worth Seeking Out

Heuk Dwaeji (black pork) is Jeju’s most famous local ingredient. The black Jeju pigs have a different fat composition and a more pronounced flavour than mainland Korean pork. Samgyeopsal (thick-cut pork belly) grilled over charcoal, eaten with doenjang paste and fresh vegetables, is the standard preparation. Numerous restaurants in Jeju City’s black pork street (Heuk Dwaeji Geori) specialise in it; expect to pay around 20,000-30,000 KRW per person for a proper meal.

Galchi jorim is a spicy braised hairtail fish dish that is a Jeju staple. Jeonbok juk (abalone porridge) is richer and more umami-forward than it sounds, particularly versions made with haenyeo-harvested abalone. Jeju tangerines (hallabong and various hybrids) are available October through spring and sold from roadside stalls; they are very good and considerably cheaper than in Seoul.

Getting Around

Jeju City is on the north coast; Seogwipo is on the south, and most sights are spread around the island’s circumference. A rental car is the practical choice. Public buses run between major sights but with infrequent schedules. The Jeju Airport has all the major rental companies; book in advance during summer when inventory runs low and prices rise.

The island takes about an hour to cross on the fast road. Plan your days geographically to avoid unnecessary backtracking.

Where to Stay

Jeju City has the most accommodation options, from international hotel chains to small guesthouses and Airbnb properties. The western coast around Hallim and the southern coast near Seogwipo are quieter and closer to different sets of attractions. If you are primarily here for nature and hiking, staying outside the city makes sense.

For budget stays, minbak (private homes with rooms) are common and significantly cheaper than hotels, typically around 40,000-70,000 KRW per night.