<P> The Puerto Princesa Subterranean River National Park is a protected area of the Philippines located about 80 kilometres (50 mi) north of the city centre of Puerto Princesa, Palawan . The river is also called' Puerto Princesa Underground River' and also called' mountanium rangers' . The national park is located in the Saint Paul Mountain Range on the western coast of the island . It is bordered by St. Paul Bay to the north and the Babuyan River to the east . The City Government of Puerto Princesa has managed the National Park since 1992 . The entrance to the subterranean river is a short hike or boat ride from the town Sabang . </P> <P> In 2010, a group of environmentalists and geologists discovered that the underground river has a second floor, which means that there are small waterfalls inside the cave . They also found a cave dome measuring 300 m (980 ft) above the underground river, rock formations, large bats, a deep water hole in the river, more river channels, and another deep cave, as well as marine creatures and more . Deeper areas of the underground river are almost impossible to explore due to oxygen deprivation . </P> <P> On November 11, 2011, Puerto Princesa Underground River was provisionally chosen as one of the New7Wonders of Nature . This selection was officially confirmed on January 28, 2012 . </P> <P> The park has a limestone karst mountain landscape . St. Pauls Underground River Cave is more than 24 km (15 mi) long and contains an 8.2 km (5.1 mi) long underground section of the Cabayugan River . The river winds through the cave before flowing directly into the West Philippine Sea and is navigable by boat up to 4.3 km (2.7 mi) in from the sea . The cave includes major formations of stalactites and stalagmites, and several large chambers, including the 360 - meter - long Italian's Chamber with approximate 2.5 million square meters volume...It is one of the largest cave rooms in the world . The lower portion of the river up to 6 km from the sea, is subject to tidal influences . Until the 2007 discovery of an underground river in Mexico's Yucatán Peninsula, the Puerto Princesa Subterranean River was reputed to be the world's longest underground river . </P>

Lugar kung saan matatagpuan ang puerto princesa subterranean river