You’d probably think that after the city tour in Palawan, you’ll just have dinner and grab a couple of beers at Kinabuchs. You may want to rethink your itinerary and experience firefly watching. In firefly watching you will cruise the Iwahig river for an hour and you will be mesmerized by the beauty of the fireflies. Iwahig river is located at Highway km. 20 Barangay Iwahig Puerto Princesa City, Palawan.