The Puerto Princesa Underground River is an 8.2km long underground river. The river is located within the Puerto Princesa Subterranean River National Park in the Philippines, approximately 30 miles north of the city of Puerto Princesa. To reach the entrance to the river you only need to take a short ferry ride from the town of Sabang. The river flows right into the sea, after passing through some of the most beautiful rock formations in the world. The river has gained worldwide admiration and attention, leading it to be included as one of the New 7 Wonders of Nature in 1012.
Interesting Puerto Princesa Underground River Facts:
The river is 8.2km long and flows underground through natural rock formations such as caves, stalactites, and stalagmites.
Only 4.3km of this are easily traveled by tourists. If tourists wish to travel the other 3.9km they have to obtain a special permit. In some of this 3.9km it is possible to wade in the river.
Some of the rock formations look similar to objects and images such as a horse, cacao fruit, a mushroom and the holy family.
The river is also called the St. Paul Underground River.
St. Paul Bay is to the north of the river and the Babuyan River is to its east.
Tourists can travel the river on a fiberglass boat.
Geologists and environmentalists discovered a second floor to the river in 2010. This led them to believe that there are waterfalls in the cave as well.
The geologists and environmentalists also discovered that there is a dome inside the cave which reaches 300 meters above the river. They also found large bats, additional river channels and marine creatures among other things.
The lower half of the river has brackish water, which means it has more salt than fresh water, but not enough to be considered salt water.
Even though it is called an underground river, it is actually above sea level. Its water flows into St. Paul Bay.
It would take an hour and a half by vehicle from downtown Puerto Princesa to reach Sabang. From there it's only a short ferry ride from the nearby town of Sabang.
The monkeys in Puerto Princesa Subterranean River National Park are so used to being fed by people that they will now grab food from visitors.
Inside the open chambers of the trip down Puerto Princesa Underground River, it's common to hear the bats chattering. Tourists usually wear helmets as the bats also have a tendency to poop on them.
The helmets that the tourists wear are also important to protect them from loose stalactite falling from above. Stalactite is a type of cave formation, a mineral that hangs from limestone caves.
Stalagmites are also a common site along the river. Stalagmites rise from the floor. They are cave formations, formed from the dripping of minerals above.
Puerto Princesa Underground River was once believed to be the longest underground river in the world. This was proven false when a longer underground river was discovered in Mexico.
Puerto Princesa Underground River was designated as one of the New 7 Wonders of Nature on January 28, 2012.