Located 100 km east of Miri, Gunung Mulu National Park is the largest national park in Sarawak, covering an area of 528.64 sq km. The park is known for its karst features, which are among the most studied tropical karst in the world. Intricate cave systems can be found within sandstone and limestone mountains in the park, highest of which is Gunung Mulu at 2,376 meters.