Gunung Mulu National Park is a mountainous rainforest nature reserve located on the enchanting island of Borneo, famous for its huge limestone caves and pointed rocky peaks, and of great scientific interest due to its biological diversity and amazing karst properties, as it contains seventeen botanical areas displaying about 3,500 species of Vascular plants. Among its highlights are the waterfall surrounded by limestone cliffs and the 2,377-meter summit of Mount Gunung.