A wooden stairway on Hallasan’s Yeongsil Trail

164 · Honourable Mentions· South Korea

Jeju Island

A volcanic island with distinctive coasts, caves and mountain habitats.

Photo credit

Basile Morin · CC BY-SA 4.0. Resized for display.

Summary

Jeju is a volcanic island off South Korea, with Mount Hallasan, lava caves and distinctive coastal formations. Forests, farmland and island communities occupy ground shaped by successive volcanic eruptions.

The island shows volcanic processes in several different forms. A mountain, a subterranean passage and a coastal cone offer complementary views of the same geological history, alongside a distinctive island culture.

101–200 · Honourable Mentions

The essentials

Explore the full photo gallery →

Allow time

4 days as a starting allowance

Choose a base

Two regional bases can reduce repeated long drives.

Getting there

Fly or take an appropriate ferry connection to Jeju, then organise island transport.

Plan ahead

Check reservations, trail conditions and the current status of lava-tube attractions.

Guide edited 29 September 2026. About practical information

The story of a place

A volcanic island with distinctive coasts, caves and mountain habitats.

Jeju's identity comes from volcanic processes expressed at several scales: the central mountain, smaller cones, coastal formations and lava tubes. Its human landscapes, from stone walls to maritime traditions, add another layer.

The island is larger than a quick circuit suggests. Choose a few areas and allow for wind, rain and temporary closures rather than assuming every geological site can be visited in two days.

The landscape of Jeju Island
Jeju IslandPhoto: Robert Simmon, using Landsat data provided by the United States Geological Survey. · Public domain

The essential experience

Make time for this.

Pair a permitted volcanic viewpoint with a coastal walk and time in a local settlement.

Explore the highlights

Look a little closer.

Jeju’s lava caves and coastal rock formations show different sides of its volcanic origins.

1

Basalt textures

Look at how cooled lava fractures.

2

Crater forms

Compare cones and the main mountain.

3

Stone walls

Notice volcanic material in everyday construction.

For the curious reader

History, landscape
and context.

Jeju Island is South Korea's largest island, covering an area of 1,833.2 km² (707.8 sq mi), which is 1.83% of the total area of the country. Alongside outlying islands, it is part of Jeju Province and makes up the majority of the province.

Background reading: an abridged extract from Jeju Island, by Wikipedia contributors, under CC BY-SA 4.0. Paragraphs have been selected and shortened for this guide. Retrieved 22 September 2026. Source revision ↗.

Turn curiosity into a visit

Plan your visit.

Physical demands
Easy coastal paths to demanding mountain walks.
The practical detail
Do not assume a famous cave is open simply because it appears in an older guide.

Before you set off.

Your ticks stay in this browser.
Add to a journey +

Through the seasons

A place in the world

Find your bearings.

A place in the world
Jeju Island location mapJeju Island location map

Select the pin to open a detailed map. Use Closer look to see the surrounding region. Drag to move a zoomed map.

Map: Natural Earth

A closer view.

Jeju Island

Load the local map to explore the surrounding area. Map tiles require an internet connection.

  1. 1

A sense of place

In pictures.

Go a little further

Sources & further reading.

The UNESCO link names the specific inscribed property. A broad entry in this project can extend beyond that property’s boundaries.

Read the guide ↗ · Complete gallery ↗