Puerto Princesa, Puerto Princesa
Puerto Princesa Subterranean River National Park
The park protects a limestone karst landscape in the Saint Paul Mountain Range on Palawan's west coast, inscribed by UNESCO as a World Heritage Site in 1999.
Its centerpiece is an 8.2-kilometre underground river, one of the longest navigable cave rivers known. The lower stretch is brackish and tidal, since the cave opens directly onto the sea through a cliff face half submerged in a saltwater lagoon.
Visitors paddle in on a small boat with a guide and a headlamp, passing chambers of stalactites and stalagmites; only a portion of the full river length is open to tourism, with the rest reserved for research and conservation.

Nearby
Sources (3)
- Inscribed on the UNESCO World Heritage List in 1999; karst landscape in the Saint Paul Mountain Range on Palawan's west coastPuerto-Princesa Subterranean River National Park, UNESCO World Heritage List
- 8.2 km long underground river with a brackish, tidal lower half flowing directly to the sea; cave entrance is a short hike or boat ride from Sabang; coordinates approximately 10°10'N 118°55'EPuerto Princesa Subterranean River National Park
- Sabang is reached by van from Puerto Princesa city, about 80 km; boats then run visitors along the coast to the river mouthPuerto Princesa Underground River

