Facts and Trivia
At a Glance | The Puerto Princesa Underground River (PPUR) is the most striking feature in the sprawling 22,200-hectare Puerto Princesa Subterranean River National Park. This park is one of three most visited UNESCO World Heritage Sites in the Philippines, along with Vigan in Ilocos Sur and Banaue Rice Terraces in Ifugao. See facts and …