The Puerto Princesa Subterranean River National Park is one of the most important conservation areas in the Philippines. It was created to protect the impressive cave systems, lush old growth tropical rainforest, interesting wildlife, unspoiled natural beauty of the area and one of the most impressive cave system in the world. Its main focus is 8.2 km. long underground river that flows beneath a spectacular limestone formation before directly emptying into the sea.

It is a core area for the Palawan Biosphere Reserve and is designated as an Important Bird Area (IBA). It was also declared as a National Geological Monument. In recognition of global significance, the PPSRNP has been inscribed to the list of natural World Heritage Sites.

As a natural area, the Park has attracted an increasing number of hikers, biologist, photographers, students and nature lovers. It is a source of pride and a key element in the identity of the people of Puerto Princesa in particular and of the Philippines as a whole.