The Manjanggul Lava Tube is a singular attraction when compared to what the opposite factors Jeju island has to offer. Whilst the lava/rock formations are stunning, This is a difficult 1km walk to the top with the tube. Young ones and aged folks will see troubles walking on uneven grounds https://jeju-island-best-trip-poi22222.pointblog.net/little-known-facts-about-jeju-tourist-attraction-75166312