But the crown jewel of the populist’s presidency also runs over one of Mexico’s natural wonders: A fragile system of an estimated 10,000 subterranean caverns, rivers, lakes, and freshwater ...

The underground caverns form when limestone caves in ... with most within a few hours drive of Cancun, Playa del Carmen, Tulum, or Merida. So while some destinations like Cenote Ik Kil and ...