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Manjang Cave

Main characteristics

Coordinates: 33.5284 N 126.7710 E
No:477        (list of all attractions)
Values:Geology, Visual
Address:Asia, South Korea, northern part of Jeju Island, Gimnyeong-ri
Name in Korean:만장굴
Alternate names:Manjang Gul, Manjanggul Cave, Manjanggul Lava Tube
Length:8,928 m
UNESCO World Heritage status:part of Geomunoreum Lava Tube System in "Jeju Volcanic Island and Lava Tubes", 2007, No.1264
Manjang Cave, South Korea
Manjang Cave / Korea.Net, , CC BY-SA 2.0

One of the most unusual and beautiful show caves in the world is Manjang Cave (Manjang Gul) in the beautiful Jeju Island. This is enormous, nearly 9 km long lava cave.

World's largest lava column in Manjang Cave, South Korea
World's largest lava column in Manjang Cave / lamoix, , CC BY 2.0

Lava tubes of Jeju

Jeju Island is rich with lava tubes - there are known some 120 caves formed by the ancient flows of lava, as well as numerous other interesting volcanic formations. The most impressive though is Geomunoreum Lava Tube System - group of caves which have been formed by the flow of basaltic lava, which 300 - 200 thousand years ago erupted from Geomunoreum volcano and flowed towards the 13 km distant ocean.

Manjang Cave

Manjang Cave is the largest cave in this system (but not the longest lava cave on island - Bilemot Cave is longer). Manjang cave is 8,928 m long, its passages are up to 30 m high and 23 m wide. Cave has three entrances.

Manjang Cave has two levels: the main tube is the longer one, while that upper level is some two times shorter. At the place where lava fell from the upper level to the lower one, has formed unique, 7.6 m tall lava column, the tallest in the world.

Sometimes it is erroneously stated that the cave is 13,422 m long, but this is not true - this is the length of the whole Geomunoreum Lava Tube System.

Stone Turtle in Manjang Cave, South Korea
Stone Turtle / ume-y, , CC BY 2.0

Lava caves of Jeju Island are some of the most beautiful in the world. Lava here has formed stalactites, stalagmites, columns, flowstones and other formations. Interesting feature is Stone Turtle - carbonate formation which is shaped like Jeju Island.

Walls of cave have marks - flowlines, left by the flowing lava.

Approximately one kilometre of this beautiful cave is opened for tourists and is one of the most popular tourism destinations on the island.

Cave fauna

In Manjang Cave live some 30 thousand common bent-wing bats (Miniopterus schreibersii) as well as other cave dwellers, such as Jeju cave-spider (Nesticella quelpartensis) and more than 30 other kinds of cave fauna.


See Manjang Cave on the map of South Korea!


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