The Puerto Princesa Underground River is a must-see for first time visitors and tourists in Palawan. The longest navigable underground river and reputedly the most beautiful subterranean river in the world.Its main attraction is an 8.2 kilometer Underground River that winds through a spectacular cave before emptying into the South China Sea.
At the mouth of the cave, a clear lagoon is framed by ancient trees growing right to the water’s edge. Monkeys, large monitor lizards, and squirrels find their niche on the beach near the cave. Visitors can also enjoy bird watching, mountain trekking, and exploring the deeper part of the forest .
The park was declared a premier ecotourism destination and has been inscribed in the UNESCO World Heritage lists for its outstanding universal value and ecological significance as a natural site of intense beauty. This World Heritage site is one of the finalists in the search for the New7Wonders of Nature.
text from: Puerto Princesa City Tourism Office