Enjoy both adventure and fascination from the entrance of Puerto Princesa Underground River to the cave’s central dome all the way back, while sailing on a boat. Officially named as Puerto Princesa Subterranean River National Park and more popularly called as Puerto Princesa Underground this national park is located in the Saint Paul Mountain Range on the western coast of the island.

Get ready with your camera to take photos of various rock formations of stalactites and stalagmites.