Puerto Princesa Underground River

Puerto Princesa, Palawan, Philippines

The Puerto Princesa Subterranean River National Park, located in Palawan, is one of the most impressive natural wonders in the Philippines. It features an 8.2-kilometer underground river that flows directly into the West Philippine Sea, making it one of the longest navigable underground rivers in the world.

Recognized as a UNESCO World Heritage Site and one of the New 7 Wonders of Nature, the park is home to stunning limestone karst formations, large cave chambers, and a rich ecosystem of bats, birds, and reptiles. Visitors explore the river through guided paddleboat tours.

  • Location: Puerto Princesa, Palawan, Philippines
  • UNESCO Status: Since 1999
  • Known For: Longest navigable underground river, limestone formations
  • Best Time to Visit: November–May (dry season)

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