Where To Try Freshwater Cave Diving

Ocean scuba is extreme enough for some, but descending into a hole in the earth to explore a submerged cave system is next-level stuff. Stalactites are usually the big draw.

Where to try it: Mexico’s Yucatán Peninsula has the world’s largest concentration of cenotes (sinkholes). Fringed by lush jungle, its crystal-clear turquoise pools are idyllic.