National Parks Week: Montezuma Well

We visit a mysterious sinkhole in Arizona that has befuddled an exclusive group of divers who’ve gotten a glimpse of a strange world at its sandy bottom. For more unusual stories, lists, and offbeat itineraries, check out the Atlas Obscura Explorer’s Guide to the National Parks. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.