용암이 흘러나와 급격히 식으면서 4-6각형 형태의 기둥으로 만들어진 수직 절리. 마치 계단이 겹겹이 쌓여있는 듯한 모습이 장관이다. 중문 대포 주상절리대는 높이가 30-40m로 우리나라에서 가장 크며, 제주 천연기념물 제443호로 지정되었다. 주상절리대와 파도가 부딪치는 모습을 보기 위해 여행자의 발길이 끊이지 않는다.
Vertical joints formed by lava flowing out and cooling rapidly to form 4- to 6-sided pillars. The sight of the stairs as if they are stacked on top of each other is spectacular. Jungmun Daepo Columnar Joint is the largest in Korea at 30-40m in height, and has been designated as Jeju Natural Monument No. 443. Travelers constantly come here to see the waves crashing against the columnar joints.
Columnar jointing is formed as lava flows out and cools rapidly, creating vertical joints that look like 4-6 sided columns. The overall sight resembles layers of stairs stacked upon each other. Jeju's Jungmun Daepo Columnar-Jointed Lava is the largest in Korea, at a height of 30-40 meters and has been designated as Natural Monument No. 443 of Jeju. Travelers continually visit to see the spectacular view of the waves crashing against the columnar joints.