Underground River of Palawan Puerto-Princesa Subterranean River National Park - Philippines carlos ortiz http://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/05/14173018/270817_362453427141354_97375149_n.jpghttp://gounesco.com.s3-ap-southeast-1.amazonaws.com/wp-content/uploads/2014/05/14173018/270817_362453427141354_97375149_n-150x150.jpgCarlos Ortiz