Karst limestone formations flank the entrance to the Cabayugan River, which flows through a cave and into the sea in Puerto-Princesa Subterranean River Park. Next up is a national treasure ...
The entire area of Palawan, covering more than 1,700 islands, has been designated a biosphere reserve by UNESCO, and it also hosts two world heritage sites, the Puerto-Princesa Subterranean River ...