Puerto Princesa’s Underground River National Park is one of the longest navigable subterranean river in the world.
Thanks to its impressive cave systems and spectacular limestone karst landscapes, the Underground River was conferred with the status of UNESCO World Heritage Site in 1999.
Puerto Princesa Subterranean River National Park is a protected area of the Philippines that encompasses one of the world’s most impressive cave systems, featuring spectacular limestone karst landscapes, pristine natural beauty, and intact old-growth forests teeming with wildlife.
The river that flows through Saint Paul Mountain Range is called the Puerto Princesa Underground River. The entrance to the Underground River is a short hike or boat ride from the town Sabang.
Aside from being one of the longest navigable underground river in the world, is also a one of the New 7 Wonders of Nature and a UNESCO World Heritage Site.
The Underground River can be explored by boat for up to 4.3 km (2.7 mi) from the sea. The spectacular stalactite and stalagmite formations that have been naturally molded inside the cave as years passed, are one of the highlights of the cruise.