Brief synthesisPuerto-Princesa Subterranean River National Park encompasses one of the world’s most impressive cave systems, featuring spectacular limestone karst landscapes, pristine natural beauty, and intact old-growth forests and distinctive wildlife. Criterion (vii): The Puerto-Princesa Subterranean River National Park features a spectacular limestone or karst landscape. It contains an underground river that flows directly to the sea. The Puerto-Princesa Subterranean River National Park, comprising 22,202 ha and covering three barangays, encompasses the natural values of the property and is of adequate size to protect all the various landforms and the estuarine ecosystem that conveys the Outstanding Universal Value of the property. This arrangement for local ownership ensures the property’s national values are maintained even after changes in local management perspectives.