The Manjanggul Lava Tube is a unique attraction compared to what the opposite items Jeju island provides. When the lava/rock formations are gorgeous, it is a hard 1km walk to the top in the tube. Kids and elderly individuals will find complications strolling on uneven grounds in dimly lit configurations. https://jejuweather55555.tribunablog.com/the-single-best-strategy-to-use-for-jeju-tourist-attraction-46753543