Underground River

Discover the Puerto Princesa Subterranean River National Park (PPSRNP), a Philippine gem celebrated as one of the country’s vital protected areas. This park unveils a mesmerizing limestone or karst landscape housing an intricate cave system, crowned by an 8.2 km underground river flowing directly into the sea. Notably, the river’s lower half is brackish, influenced by the ocean’s tides—a rare natural phenomenon.

Dive into the PPSRNP’s scientific wonders, including the discovery of 11 minerals, crystal and egg-shaped rock formations, and a 20 million-year-old Miocene age serenia fossil. Recognized as one of the New 7 Wonders of Nature, this underground marvel captivates with its global significance.

Beyond its geological marvels, the PPSRNP safeguards a full mountain-to-sea ecosystem, harboring forests of immense importance for biodiversity conservation. Designated as a World Heritage Site on December 4, 1999, its inscription affirms outstanding universal value and impeccable conservation.

Managed by the City Government of Puerto Princesa, the PPSRNP pioneers environmental conservation and sustainable development. This national park stands as a model, devolved and expertly managed by a Local Government Unit, showcasing effective protected area management and sustainable tourism.

More than a natural sanctuary, the Puerto Princesa Subterranean River National Park is a source of pride, embodying the identity of Puerto Princesa and the Philippines. As a symbol of commitment to global natural heritage conservation, its preservation resonates as a testament to the Filipino people’s dedication.