Jeju Popular Attractions Travel+Crazy: Jeju Island Top 12 Jeju Oreums (Volcanic Cones) in Jeju Island, Korea Trazy CrewMay 18, 2022May 19, 2022 Jeju Island is the largest island in South Korea and it was formed by the eruption of an underwater volcano around 2 million years ago. Therefore, there are more than...