Kick off a full-day adventure with a visit to Tulum, an abandoned Maya city perched on top of a bluff overlooking the turquoise Caribbean. Then, deep inside the Yucatán jungle, wander into Sac Actun and Nohoch Nah Chich, two cenotes among a wonderland of underground caves, and snorkel around stalagmites. Rev it up with rides aboard a 4x4 truck and stop to rappel and zipline into cenotes. Experience the mysticism of a Maya purification rite before digging into a satisfying traditional buffet lunch. Includes round-trip hotel transport from Cancun.