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Billemotdonggul Lava Tube

Natural Monument 342, the Longest Cave in the World with a Length of 11,749m

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빌레못동굴
빌레못동굴


Billemotdonggul Lava Tube is located in the hillside of Eoeum-ri, Jeju-si. It got its name because there are two ponds near the cave. The Jeju dialect for flat bed rock, “Bille” and the Korean word for pond, “Mot” were compounded for the name of the cave. The total length of the cave is 11,749m, which makes it the longest cave in the world, and there are many mazes inside the cave. Scientists think that the cave was formed due to a volcanic eruption about 70,000 or 80,000 years ago. Inside Billemotdonggul Lave Tube, there is a silica (a pillar made of compound silicon, oxygen, and hydrogen) which is 28cm high, and lava that has solidified in the shape of a ball that is 7m in length and 2.5m in height. Also, the stalagmite that is 68m high is the second largest stalagmite in the world. On the walls of the cave, the flow of the lava has been frozen and preserved. Billemotdonggul Lave Tube is a world-famous cave that preserves the trace of its formation very well, and it has a scientific value because a fossil of a golden bear was found in it. It is protected and designated as Natural Monument.


빌레못동굴
빌레못동굴
빌레못동굴
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