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Double the adventure of your Palawan trip in this 2-in-1 combo tour. Join a river cruise to the Underground River, a UNESCO World Heritage Site and the world’s longest navigable subterranean river, to view caves and remarkable rock formations under torchlight. Then, climb to the top of Ugong Rock and zipline down for a majestic countryside view. A local guide, round-trip transportation, and included lunch adds to the fun and convenience.