Manjanggul Lava Tube

만장굴

One of the world's longest lava tubes (about 7.4 km), with a 1-km section open to visitors. It is a World Natural Heritage Site, and the lava column inside stands 7.6 metres tall.

Manjanggul is in the former Gujwa-eup area in the northeast of Jeju Island. It is a lava tunnel formed by lava flows from Hallasan about 200,000 to 300,000 years ago. Its total length is about 7.4 km, with a maximum width of 23 metres and a maximum height of 30 metres. It is one of the largest lava tubes in the world. As a representative of the Geomunoreum Lava Tube System, it has been listed as a World Natural Heritage Site together with Hallasan and Seongsan Ilchulbong. The open section is about 1 km (2 km round trip), taking 40–60 minutes. Inside you can see lava flow marks, lava terraces, a tortoise-shaped lava rock that resembles a map of Jeju Island, and at the end a 7.6-metre lava column, said to be the tallest in the world. The temperature inside stays between 11 and 21°C with high humidity, making it a summer refuge, but you need extra clothing in winter. Admission for adults is 4,000 won. Nearby sights to combine include Gimnyeong Maze Park (5 minutes by car), Woljeong-ri Beach (a café street and emerald water), and Bijarim Forest (thousand-year-old torreya trees, about a 1-hour walk). Getting there: from Jeju city, take the 101 express bus to Gimnyeong and transfer to the 711-1, or drive for about 40 minutes. Eastern one-day bus tours usually include it. Note: the ground inside is wet and uneven, so wear non-slip shoes, and slippers are not allowed. The light is dim, but flash photography is prohibited. It is closed on the first Wednesday of each month. The cave was closed for a long time for maintenance, so check the official website to confirm it is open before you go.

Manjanggul Lava Tube

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Places to eat nearby