Things to Do at Puerto Princesa Subterranean River National Park

The Puerto Princesa Subterranean River National Park, also known as the Underground River, is a UNESCO World Heritage Site and one of the New 7 Wonders of Nature. Located on the island of Palawan in the Philippines, this remarkable natural wonder features an 8.2-kilometer navigable underground river that winds through a spectacular limestone karst landscape beneath the St. Paul Mountain Range. The river flows directly into the South China Sea and is believed to be the longest navigable underground river in the world. The park encompasses 22,202 hectares of pristine old-growth forest and is home to diverse ecosystems ranging from mountain-to-sea landscapes. Visitors can explore approximately 4.3 kilometers of the underground river system by boat, marveling at dramatic stalactite and stalagmite formations, cathedral-like chambers, and unique rock formations. The park also protects important biodiversity, including several endemic species and serves as a critical habitat for endangered wildlife such as the Palawan peacock pheasant and Philippine cockatoo.

From Puerto Princesa city center, take a 1.5-2 hour van or bus ride (approximately 80 kilometers) to Sabang port. Most visitors join organized day tours that include round-trip transportation, permits, and boat transfers. At Sabang, board a 15-minute boat ride across the bay to reach the Underground River entrance at St. Paul Bay. The boat transfer is mandatory as there's no land access to the cave entrance. Advance booking is essential as daily visitor numbers are limited to protect the ecosystem.