Palawan, Philippines
On the west coast of Palawan Island in the Philippines you’ll find the Puerto Princesa Subterranean National Park; home to the longest navigable underground river system in the world. This delicate and unique ecosystem is home to several endemic animal and plant species, and is highly protected – tourists can only access the river via guided, managed groups which are limited in number each day.
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You’re first driven about 50 miles north of Puerto Princesa city, then board outrigger boats to get into the park proper. From there, it’s a short hike (complete with monitor lizards and monkeys!) to board the canoes in groups. A local guide then paddles you through the cave system – tourists are only allowed through the first 2.6 miles (4.3km) but the total navigable portion is 5 miles (8.2km). Along the way your guide points out notable rock formations in the cave, and – if you’re lucky – might even sing a song!
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The river was listed as a UNESCO World Heritage Site in 1999 and was named one of the “New 7 Wonders of Nature” in 2012. The place is like nowhere else on Earth and is a must-visit for any traveler to the Philippines. Enjoy!