The island of Borneo is the third-largest island in the world. It is divided among Indonesia, Malaysia and Brunei, and known by different names: Borneo, Brunei and Kalimantan, to name a few. Borneo is comprised primarily of dense areas of rain forest and mountainous regions, with significant river and cave systems. It has among the most diverse flora in the world, with nearly 11,000 species of flowering plants and 700 species of trees recorded to date. Borneo is home to unique wildlife and endangered species, making this destination a paradise for nature lovers. Borneo also offers many adventurous outdoor activities such as scuba diving, caving, adventure treks, mountain climbing, rafting and more.