Manjanggul Lava Tube

만장굴

A giant lava tube left by Jeju’s volcano

⚠ Cool inside even in summer

Hours
About 9am–6pm; check the closure day
Tickets
About ₩4,000 for adults
Address
182 Manjanggul-gil, Gujwa-eup, Jeju-si

The route lava once took became a cave. About a kilometre is open to visitors: the ceiling is high and the floor still carries ridges from the flow. At the far end a lava column stands more than 7m tall. It is around 10 degrees inside even in midsummer, so bring a light jacket. The floor is uneven and drips from above, so wear sneakers.