Micheongul Cave

Located in Samdal-ri, Seongsan-eup, Seogwipo-si, Jeju, Micheongul Cave is a horizontal lava tube stretching approximately 1.7 km in length. In the open first section, scattered rockfalls can be seen along a gentle slope. The undisclosed second section features well-developed, unique geological formations, such as exquisite lava shelves protruding like steamed buns and lava bridges connecting the two walls. The cave entrance was formed by a ceiling collapse, and rope structures indicating the flow direction of the basalt can be observed.