The Puerto Princesa Subterranean River National Park is located about 50 kilometers north of the city of Puerto Princesa, Palawan, Philippines. The archipelago of Palawan, Philippines is consisting of huge variety of tropical forests, over 11,000sq km of coral reefs, mountains, 2,000km of coastline, marine wilderness with more than 2,000 species of fish. The site contains a full mountain-to-the-sea ecosystem and has some of the most important forests in Asia. The area is home to Puerto Princesa Subterranean River National Park which is also known as the “Underground River Cave“. Located only an hour flight from Manila, it is one of the world’s longest underground river – whole 8.2 km. One of the river's distinguishing features is that it emerges directly into the sea, and its lower portion is subject to tidal influences. The area also represents a significant habitat for biodiversity conservation.