Manjanggul1 Jeju Travel Part 3: Manjanggul: A Must-Visit Destination for Underground Cave Ex What is Manjanggul?Manjanggul is a large lava tube cave located on Jeju Island, South Korea. It is one of the longest lava tube caves in the world, stretching for 7.4 kilometers and reaching a maximum height of 23 meters. The cave was formed by the cooling and solidification of lava from a volcanic eruption about 200,000-300,000 years ago. Today, Manjanggul is a popular tourist attraction known .. 2023. 4. 14. 이전 1 다음