Top Secret Swimming Holes

You've never seen swimming holes like these! We're on a mission to uncover the world's most secluded, sexy and extreme natural places to cool off. We'll hike, climb, boat and even dog-sled our way around the globe to track down the most amazing places to take a dip, jump off a cliff or explore underwater caves. From a crystal blue 100-foot waterfall buried deep in an Arizona Indian Reservation and the ancient Mayan underwater caves of Mexico to the country's oldest commercial quarry in Vermont…