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Early this year, I went to Palawan with some friends. Our trip involved island hopping, snorkeling, spelunking, playing sungka with foreign backpackers, watching fireflies (a lot of fireflies, actually) and of course, navigating the Puerto Princesa Underground River.

Just in case you didn’t know, the Puerto Princesa Underground River is the world’s longest navigable underground river at 8.2 km.

It features astonishing formations of stalactites and stalagmites, which basically are the main attraction of the whole experience. Let me show you how wonderful it is inside the Puerto Princesa underground River.