Hidden beneath the lush limestone mountains of Palawan, Philippines, lies one of the most fascinating natural wonders in the world the Puerto Princesa Subterranean River, often called the Underwater River of Palawan. This UNESCO World Heritage Site combines breathtaking beauty, biodiversity, and mystery, making it one of Asia’s top eco-tourism destinations.
What Makes It Unique
The river runs for over 8 kilometers underground, flowing directly into the West Philippine Sea. It winds through a series of caves and chambers filled with stunning rock formations, stalactites, and stalagmites. What makes it truly unique is that it is one of the longest navigable underground rivers in the world.
Visitors can travel by small paddle boat through a portion of the river, gliding in silence beneath towering cave ceilings while listening to the rhythmic dripping of mineral water a surreal and peaceful experience.
Geological and Ecological Significance
The Puerto Princesa Underground River is a karst landscape, formed over millions of years through the slow erosion of limestone by water. This process created vast cave systems and underground channels that now support unique ecosystems.
The park surrounding the river is home to diverse wildlife, including monitor lizards, monkeys, bats, and rare bird species. The balance of both terrestrial and subterranean habitats makes this area an important site for biodiversity research and conservation.
ALSO SEE : Tuatara: The Ancient Reptile That Time Forgot
Visiting the Underwater River
Tourists can access the site from Sabang, a small coastal village about two hours from Puerto Princesa City. From there, licensed guides and local boatmen take visitors on an unforgettable journey through the underground passages.
Tips for visitors:
- Book your tour in advance, as access is limited to protect the environment.
- Bring waterproof gear and minimal electronics.
- Respect conservation rules do not touch the cave formations or disturb wildlife.
- The best months to visit are November to May, during the dry season.
Recognition and Awards
The Puerto Princesa Subterranean River National Park was designated as a UNESCO World Heritage Site in 1999 and later named one of the New 7 Wonders of Nature in 2012. Its preservation continues to be a priority for both the Philippine government and international conservation organizations.
Why It’s a Must-See Destination
- One of the longest underground rivers on Earth
- Recognized as a UNESCO World Heritage Site
- A perfect blend of adventure, science, and natural beauty
- Home to rich wildlife and limestone cave systems
- A model for sustainable eco-tourism in Southeast Asia
