Welcome to the UNESCO World Natural Heritage Jeju

The island is 73km wide and 31km long with a total area of Jeju, the largest island in South Korea, came into existence 700 to 1, 200 thousand years ago when lava spewed from a subsea volcano and surfaced above the waters. Then 100 to 300 thousand years ago, another volcanic eruption formed Mt. Halla. The final volcanic eruption that took place approximately 25 thousand years ago created the crater lake, Baekrokdam, at the summit of the mountain. Download it for FREE on your iPad, iPhone Andro