If you’re vacationing in Cancun, on the Mayan Riviera, the Costa Maya, or elsewhere on Mexico's Yucatan peninsula, coast or the majestic Maya archaeological ruins of the interior (highly recommended), you’ll stumble across – and hopefully not into – cenotes (“say-NO-tess,” from the Maya dzonot). These are good-size, sometimes enormous, sinkholes, often filled with water, and the limestone of the Yucatan peninsula is riddled with thousands of them. The first time I came across one was during a v
