The Puerto Princesa Subterranean River National Park, a UNESCO World Heritage Site, is one of the longest navigable underground rivers in the world, with a total length of 8.2 Kilometers and one, of few, open to the public. It is located about 50 km north of the city of Puerto Princesa, Palawan, Philippines. A distinguishing feature of the river is that it winds through a cave before flowing directly into the South China Sea. It includes major formations of stalactites and stalagmites, and several large chambers. The lower portion of the river is subject to tidal influences. The underground river is reputed to be the world’s longest. At the mouth of the cave, a clear lagoon is framed by ancient trees growing right to the water’s edge. The area also represents a significant habitat for biodiversity conservation. The site contains a full ‘mountain-to-sea’ ecosystem and has some of the most important forests in Asia.
- Islands and Municipalities of Palawan
- Ugong Rock