lava columnar joints 썸네일형 리스트형 To touch and feel lava column joints; Gaeggak jusangjeoli / Jeju treavel *Notice- This article is written by non-native English speaker. Have you ever heard about lava columnar joints? When you travel in Jeju island you will see a lot of lava columnar joints. So, You might wonder what the lava columnar joints? 'Lava columnar joints' are basically lava rocks which cooled down touch very cold air. Just imagine that lava erupted on the top of mountain and it flowed down.. 더보기 이전 1 다음