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Manjanggul Lava Tube [National Geopark] (만장굴 (제주도 국가지질공원)) · © KTO · KOGL Type 3
Jeju
Manjanggul Lava Tube [National Geopark]
Manjanggul Lava Tube is one of the world's longest lava tubes — a 7.4-km volcanic cave on Jeju formed by lava flows over 200,000 years ago. The cave is registered as UNESCO World Natural Heritage and as part of Korea's National Geopark. About 1 km of the cave is publicly accessible, with massive lava columns, lava stalagmites, and the world's largest known 'lava column' (7.6 m tall). For travelers seriously interested in Korean geological heritage, Manjanggul is the strongest single pick on Jeju and one of the most consequential geological destinations in the country.
Why go
Manjanggul Lava Tube is one of the world's longest lava tubes — a 7.4-km volcanic cave on Jeju formed by lava flows over 200,000 years ago. The cave is registered as UNESCO World Natural Heritage and as part of Korea's National Geopark. About 1 km of the cave is publicly accessible, with massive lava columns, lava stalagmites, and the world's largest known 'lava column' (7.6 m tall). For travelers seriously interested in Korean geological heritage, Manjanggul is the strongest single pick on Jeju and one of the most consequential geological destinations in the country.
Quick highlights
- UNESCO World Natural Heritage lava tube
- 7.4 km volcanic cave on Jeju
- World's largest known lava column
- 1 km publicly accessible
- Strongest Korean geological pick
Nearby best pairs
Other places in Jeju that pair well with this visit.
Jeju
Jeju Folklore & Natural History Museum
Why go: Jeju island vibe — volcanic coast, slow pace











