Underground River is a must-visit tourist spot in Puerto Princesa, Palawan. It's inscribed by UNESCO as a World Heritage Site in 1999 and became as one of the New7Wonders of Nature. in 2012.
Puerto Princesa Underground River is located in the Saint Paul Mountain Range on the western coast of the island, which bordered by St. Paul Bay to the north and the Babuyan River to the east. It features rock formations, large bats, marine creatures, river channels, small and big caves, and more.
