Manjanggul

The Manjanggul Lava Tube is placed in Gimnyeong-ri, Gujwaeup, Jeju City. At as a whole lot as 23m large, 30m excessive and eight.928km lengthy, it's miles the 12th-longest lava tube inside the world and the second longest on Jeju island. It is seemed as having large scientific and background charge, as a result of its remarkable condition of upkeep notwithstanding its age of formation. Lava stalactites and lava stalagmites, lava columns, lava flowstone, lava helictites, lava blisters, cave coral, benches, lava rafts, lava bridges, lava shelves, grooved lava striations, and ropy lava are nicely-preserved. Among them, a lava column of seven.6 m is the largest seemed inside the worldwide. There are 3 entrances and No. 2 heading southward is open to the general public.

Entrance No. Three includes the maximum favorable habitats for cave existence and between Entrances 1 and a couple of, there may be a lower stage maximum crucial tube wherein most of the dwelling creatures can be found. In the Geomunoreum Lava Tube System, the Manjanggul Lava Tube has the finest quantity of dwelling creatures, consisting of the Jeju cave-spider. In the top a part of Entrance 2, there are at the least 30,000 not unusual bent-wing bats forming the maximum vital colony of bats showed to be residing in Korea up to now.