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The Korean Peninsula Volcanoes Are Alive – Part 4. Jeju Island, a scenic spot created by volcanoes. Jeju Island, a volcanic island that preserves the mystery of the ancient times, is a huge work of art created by volcanoes and a volcanic museum. ‘Cheonjiyeon’ is a waterfall created by hardened lava. The lower part of Cheonjiyeon is formed by the ‘Seogwipo Formation’ that preserves the secret of Jeju Island’s formation. The west side of Baeknokdam is a dome-shaped columnar joint formed by trachyte. It preserves the spectacular scenery of Yeongsilgiam and Byeongpungbawi. The east side boasts a beautiful contrast with the steep west side with its gentle terrain and wide oreums. ‘Manjanggul Cave’ is the longest and largest lava cave in the world. Lava flow remains on the reddish brown walls, vividly recording the flow of lava. Let’s learn about the works of nature that can only be seen in Jeju. - Science lovers, come here and join us! Meet YTN Science’s various channels! :) Homepage ▶ http://science.ytn.co.kr/ Facebook ▶ / ytnscience Naver Band ▶ https://band.us/band/68281794 Naver Post ▶ https://post.naver.com/my.nhn?memberN...