-One of the new seven wonders of Nature, the Puerto Princesa Under Ground River is indeed one of the most astonishing and amazing cave system in the world. Located in the Saint Paul Mountain range about 76 kilometers north of he Puerto Princesa City,Palawan.
It is also known as the Longest Under Ground River in Asia and the second Longest Under Ground River in the World with an 8.2k long traversable under ground river that directly flow to the sea.