The Puerto Princesa Subterranean River National Park, also known as Puerto Princesa Underground River, is a UNESCO world heritage site and was chosen as one of the new seven wonders of the world. The river is located on the western coast of the island, with vast virgin forests and breathtaking mountain ranges.

Ride a paddle boat into the underground river, see the unique rock formations, spot wildlife and explore the longest navigable subterranean river in the world, completely underground.