Puerto Prinsesa Underground River

The Puerto Princesa Subterranean River National Park is located about 50 kilometers north of the city of Puerto Princesa, Palawan, Philippines. The park located in the Saint Paul Mountain Range on the northern coast of the island. It is well managed by the Palawan Government since 1992. It is also known as St. Paul's Subterranean River National Park, or St. Paul Underground River.

The park has a limestone karst mountain landscape with an 8.2 kilometer navigable underground river. 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 area also represents a habitat for biodiversity conservation. The site contains a full mountain-to-the-sea ecosystem and has some of the most important forests in Asia. It was inscribed by UNESCO as a World Heritage Site on December 4, 1999.

Puerto Princesa Subterranean River National Park is one of the 28 finalists for the "New Seven Wonders of Nature" competition. If you want to vote for PP undergroud river, just foll this link.