Below the Chihuahuan Desert in southeastern New Mexico, lies an extensive system of limestone caves, among them the pristine Lechuguilla Cave and the famed Carlsbad Cavern, home to one of North America's largest underground chambers. But there’s more to this subterranean world than gigantic geological formations. It's also ground zero for a microbial war that’s been raging for thousands of years, right beneath our feet.

Untold Earth explores the seeming impossibilities behind our planet’s strangest, most unique natural wonders. From fragile, untouched ecosystems to familiar but unexplained occurrences in our own backyard, this series chases insight into natural phenomena through the voices that know them best.

Untold Earth is produced in partnership with Atlas Obscura and Nature.

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Subscribe to PBS Terra so you never miss an episode! https://bit.ly/3mOfd77

And keep up with PBS Terra on:
Facebook:   / pbsdigitalstudios  
Twitter:   / pbsds  
Instagram:   / pbsterra