On Sunday’s episode of The Excerpt podcast: Hidden beneath Earth’s surface are caverns and pathways that hold the secrets of our planet’s very beginnings. Even after decades of exploration, there are ...

Legendary cave diver Sheck Exley spent decades pushing the limits of underwater exploration, setting records and developing many of the safety rules used in modern cave diving. In 1994, he joined an ...

A renowned underwater cave explorer died last week during an expedition inside the Texas cave where he set a world record a decade earlier. The body of 56-year-old Brett Hemphill was brought back to ...

Correction: A previous version of this article referred to the non-profit organization Karst Underwater Research as "Karst Underground Research" in one instance. This has been corrected. A group of ...

I am cold and alone inside the cave. Sitting there at 6m (20ft) I'm slowly loosing all feeling. I am so cold that it hurts. I am desperately craving comfort. To stay put is a mental struggle. It is ...

Robbie Schmittner is a pioneer in the world of underwater cave exploration. Robbie Schmittner is a pioneer in the world of underwater cave exploration, universally acknowledged as the world’s most ...

When Natalie Gibb emerges from one of her cave dives on the southeast coast of Mexico, the 41-year-old woman could easily be mistaken for a swamp monster. “I’m dripping with microbial goo and reeking ...

Cave diving combines the thrill of scuba diving and with the excitement of exploring a cave; it’s a challenging activity even for experienced explorers. At these four sites — some of the most popular ...

Brett Hemphill, a record-setting cave diver from Florida, died in Texas while exploring one of the deepest underwater cave systems in the U.S., according to a Facebook post from Karst Underwater ...

Researchers said the find adds another piece to the emerging picture of early inhabitants of the Yucatán Peninsula when the landscape was a dry plain with cliffs rather than today’s jungle.