Venture deep into the bowels of earth, a zone the Mayans know as Xibalba, or the underworld, on this extraordinary journey to the Rio Secreto underground river system. Cycle along jungle paths, rappel down a sinkhole then swim and walk through a mysterious underground world of crystal waters, pristine stalactites and stalagmites and glistening lights. For ease, your tour includes transfers, lunch, snorkeling gear and even towels.
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