Puerto Princesa Subterranean River National Park or Puerto Princesa Underground River is located about 50 kilometers north of the city of Puerto Princesa, Palawan, Philippines. Topography varies from flat terrain to rolling hinterlands, from hills to mountain peaks. The ridges and mountain tops are equally pronounced and the slopes are precipitous making it difficult and dangerous to conquer its apex. The Park has a range of forest formations representing eight of the thirteen forest types found in tropical Asia, namely forest over ultramafic soils, forest over limestone soils, montane forest, freshwater swamp forest, lowland evergreen tropical rainforest, riverine forest, beach forest, and mangrove forest. Researchers have identified more than 800 plant species from 300 genera and 100 families. These include at least 295 trees dominated by the dipterocarp type of species.

Can’t get enough of it? Visit these links:

• http://www.puerto-undergroundriver.com/
• http://www.new7wonders.com/community/en/new7wonders/new7wonders_of_nature/puerto_princesa_underground_river
• http://www.worldheritagesite.org/sites/puertoprincesa.html
• http://visitpuertoprincesa.com/index.php?option=com_content&task=view&id=73&Itemid=160
• http://undergroundriver.net/