Traditional, double outrigger boats called banca glide across the glass-like waters of Palawan ... Cabayugan River, which flows through a cave and into the sea in Puerto-Princesa Subterranean ...

Palawan Island, located in the Philippines, is a true gem of natural ... Puerto Princesa offers a unique experience with the Subterranean River National Park, featuring an underground river.

The tropical island nation of the Philippines ... mountains of Palawan. The resulting subterranean labyrinth was described by Unesco as "one of the world's most impressive cave systems", upon ...