Jejudo, which means Jeju Island, is the biggest island of Korea and its most touristic area for Korean people dreaming of beautiful beaches and nice sea. The WHS there mainly consists of the Hallasan mount, an extinct volcano culminating at almost 2000 meters and the lava tubes inside which you can walk and enjoy the natural sculptures made by lava and water.
The Volcano is a great national park in which people hike and climb to the top. Four different ways allow to get to the top and are more or less easy to use. Whatever the one you take, you will have several hours of hard walk to get to the top and same thing to get down. However, you will enjoy the beautiful landscape of the park with its fauna and flora and its different places between forests, solid lava, water falls and cliffs. Lava tubes are really amazing and offer a natural testimony of the work made by lava first and erosion then.