Manjanggul Lava Tube (UNESCO World Natural Heritage)

Located in Gujwa-eup, Jeju City, Manjanggul Lava Tube (UNESCO World Natural Heritage) is part of the Geomunoreum Lava Tube System and stretches approximately 15km in total length. The interior features a stunning array of formations, including lava stalactites and stalagmites. At the end of the open section, visitors can marvel at a massive lava column standing about 7.6 meters high, which is renowned as one of the largest of its kind in the world.