The giant caves of Gunung Mulu National Park - Going to Gunung Mulu Cave explorers progress downstream in Clearwater River Cave. The eighth longest cave in the world, it's found in Gunung Mulu National Park, Sarawak, Borneo, Malaysia.
Clearwater cave is believed to be the largest interconnected cave system in the world by volume and the longest cave in the world. The cave lies on the western margins of Gunung (Mount) Api in Gunung Mulu National Park in Sarawak.
Gunung Mulu National Park boasts one of the most impressive cave systems in the world.
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Gunung Mulu National Park has been a World Heritage site since 2000, with the organization dubbing it "the most studied tropical karst area in the world." The extraordinary park feature thousands of plant species, millions of bats, and the largest known cave chamber in the world.