Of the river's 5.1-mile length, 2.7 miles is navigable on a small boat tour. Entrance of the Puerto Princesa subterranean underground river. The journey to the river begins with a ride in a bangka ...
Next up is a national treasure: Puerto-Princesa Subterranean River National Park ... Book a guided boat tour (permit included) to glide through cathedral-like caverns on one of the world ...
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