Viator Exclusive: Coba Ruins Early Access Tour with an Archaeologist and Cenote Swim from Cancun. Discover the ancient city of Coba, without the crush of crowds, on this early morning tour with an archaeologist guide — a Viator Exclusive that can't be booked anywhere else! Explore in relative tranquility one of Mexico's most famous Mayan sites, one of the largest settlements of the Classic period, and enjoy personalized attention from your professionally certified archaeologist guide. Huff your way up the tallest pyramid in the Yucatan Peninsula, snap amazing photos, and then cool your jets with a dip at Aktun Chen cenote. Lunch and hotel transport from Cancun are included. Book and Save 25% Off Viator Exclusive: Coba Ruins Early Access Tour with an Archaeologist and Cenote Swim from Cancun.