Puerto Princesa City Tour here and here . Puerto Princesa Honda Bay Island Hopping Serenity (not the milk tea) Our third (and last day) at Puerto Princesa is devoted to the Underground Tour. Our departure time back to Clark is 1:45PM so we had to be at the airport a little after lunch. Our tour agency, La Tiara, arranged that our tour van fetches us from the pension house at 5:30AM. I took this while the van was moving. Sorry. :( Interestingly, our tour guide for the day made us watch a short video on how the Underground River was discovered and why was it considered a natural wonder. After more than 2 hours, we finally made it to Ugong Rock Adventures. Short stop before the actual tour Ugong Rock Adventures is a short stop before getting to Sabang Beach. It's spelunking (or simply "caving") and zipline area. Since our group is a bunch of killjoys (and we don't want to spend whatever cash we have left to save a trip to the bank). We