Fodor's Expert Review Cenote Samulá
Valladolid Nature Sight
Perhaps the most photographed cenote in the Yucatán, this sinkhole is located across the road from Cenote X-Keken, about 5 km (3 miles) west of the main square. A narrow stairway leads to crystal clear water where tree vines dangle overhead and hundreds of birds nest between the stalactites. Don't be alarmed by the tiny Garra rufa fish that nibble at your feet—they are actually eating away the dead skin cells. Guides offer tours for tips.