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Langgun Lake

Langgun Lake

Langgun Lake is the second largest fresh water lake in Langkawi.

Langgun Lake occurs within the Lower Limestone Member of the Setul Formation. It is the second largest fresh water lake in Langkawi. It was part of bowl-shaped depression called sinkhole or doline, formed when water dissolved the limestone walls. This large lake is positioned along one of the major fault lines that cut across Langgun Island.

Sinkholes are common when there are limestones, carbonate rocks, or salt beds below the land surface, which are naturally dissolved by ground water passing through them. Once the size of the cavern formed by the dissolved rocks becomes too big, and without support for the land above, there would be a sudden collapse creating a sinkhole. In time this will be filled with rain water creating a typical lake such as Langgun Lake.

A long and deliberate walk to this lake would probably take 45 minutes, however, it is not just the destination, but the journey matters too because of the rich variety of flora and fauna that await to be discovered here.

An aerial view of Langgun Lake, formed by a limestone sinkhole, now filled with rain water.
Another view of Langgun Lake, with limestone hills at the background.
Layers of limestone forming the wall of Langgun Lake.
Geosites location map of Kilim Geoforest Park.
(The Cooperative of Kilim Village Community Langkawi Limited)

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