Palawan, located in the southwestern tip of the Philippines, is the fifth largest island in the Philippines. The island is long and narrow with a northeast-southwest orientation. It has a hot tropical rainforest climate. It has a diverse landscape with mountains, hills and plains, and well-developed coral reefs. The island is rich in flora and fauna and is one of the richest islands in the Philippines in terms of flora and fauna. Puerto Princesa, the capital, is well known for its tourism industry and attractions such as the Puerto Princesa Underground River National Park.