Hallasan
Hallasan has various forms of 360 Oreum and excellent scenic values in each season. It has high species diversity according to altitude, and Baekrokdam at top of Hallsan is a crater lake with 575m in circumference and 100m in depth.
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World Natural Heritage Exhibitions
World Natural Heritage Exhibitions
On June 27th, 2007, the 『volcanic island and lava caves』 in Jeju was designated as a UNESCO World Heritage for the first time in Korea. Designated heritages include Hallasan Natural Sanctuary whose scenic value and geologic value is well appreciated, Tuff Cone in Seongsan Ilchulbong, and Geomunoreum Lava Tube System (Bengdwi Cave, Manjang Cave, Gimnyeong Cave, Yongcheon Cave and Dangcheomul Cave including Geomunoreum). This exhibition clearly and intelligibly describes the process of designating Jeju's world natural heritages and its contents with description panels and video images.
Besides, there are miniatures of Hallasan and Seongsan Ilchulbong, and visitors can get information about animals and plants in Hallasan using a touch-screen information searcher. In a cave, a lava falls in Gimnyeong Cave is reproduced to explain the process of formation. Also, it displays the inside of a cave by modelling Dangcheomul Cave, a lime decorated lava tube having a characteristic of a limestone cave which is a closed area in Geomunoreum Lava Tube System. By modelling stalactite, soda straws, stalagmite and various kinds of cave products, it makes visitors feel as if they were in a real cave.
Seongsan Ilchulbong
Seongsan Ilchulbong a tuff cone made from the eruption of a volcano in shallow waters about 5,000 years ago. The original form of a crater is preserved as it is, and various kinds of sediment structure created in the process of volcanic eruption along the seashore cliff are precious materials for volcanologic studies.
Yongcheon Cave
There are lots of soda straws and stalactites all over Yongcheon Cave, which grow with the passing times.
Dangcheomul Cave
Dangcheomul Cave is relatively small (about 110m) and simple-type lava cave, which is estimated to be made about 320,000 years ago. Though it is a lava cave, it seems like a limestone cave with the second products made of lime components of clam sand accumulated on the ground.
Large lake at the end of the cave
It is a large-sized lake formed at the end of the shore in Yongcheon Cave with 12m in depth, about 200m in length and about 20m in width. Considering that it has bit salinity, it is expected that seawater flooded to the lake. The both ends of a cave continues to stretch toward water of the lake, so it is not possible to see the end.