While on a visit to Philippines, you cannot afford to miss out some of the must see spots of this beautiful country including the  Puerto Princesa Subterranean River National Park,  one of the world's longest underground rivers. Listed among the  World Heritage Sites of the Philippines, this natural 8.2 km navigable underground river is believed to be the world’s longest. The river is beneath a beautiful limestone karst mountain called St. Paul, which is named because  one of its peaks resembles the dome of St. Paul Cathedral in Italy. The park has a limestone karst mountain landscape with an 8.2 kilometer navigable underground river. The river hits a cave before joining the  South China Sea. The wonderful natural stalactite formations  give it an eerie appearance. It

Famous for its unique flora and fauna, this national park is one of the centers of biodiversity conservation in Palawan. One of the strongest contenders to be in the 7 New Natural Wonders of the World Competition, Puerto Princesa Subterranean River National Park is something that you must visit atleast once in your lifetime! Take a closer look at this natural wonder in this blog Planet Kirei, which has some beautiful snaps shots of this national park.