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.
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!
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!