Geomunoreum Lava Tube [UNESCO World Natural Heritage Site] (거문오름 [유네스코 세계자연유산])

Standing at 456 meters above sea level, Geomunoreum Lava Tube [UNESCO World Natural Heritage Site] is the parent volcanic cone that formed the Geomunoreum Lava Tube System and is the only oreum in Jeju to be inscribed as a UNESCO World Natural Heritage site. Lava flows erupted from the center of the crater to form a continuous 4km streamlined erosion valley, creating a lush forest filled with planted black pines and cedar trees.