Ruby Falls is one of those places that stays with you long after you leave. Tucked... The post The Tallest Underground Waterfall You Can Visit in the U.S. Hides Inside a Tennessee Mountain appeared ...

Terrence Tysall set a record scuba diving to the Edmund Fitzgerald. Ric Mixter dove in a submersible, finding a missing body. Here are their stories.

The scariest jack-o'-lanterns of the season are carved deep down in the cold and wet of Lake Chelan, 35 feet below the ...

There are hundreds of caves in Belize that served as portals to what the Maya called Xibalba—home to ancient death gods, rituals, and extraordinary relics left behind. Accessible only by kayak or ...

Between the Sinks and the Rise of the Middle Fork of the Popo Agie, the river famously disappears into subterranean mystery.

To someday allow scientists to stay underwater conducting research for days on end, the UK-based company DEEP has designed ...

If you want to escape the crowds of Orlando and Miami, there are plenty of Florida college towns that offer history, culture, ...

The idea of disappearing into some of the world’s deepest pockets submerged in pitch black water, with only the sound of heavy breaths for company, would bring on a shiver for many. But for Thai cave ...

Tourists swim in a cenote, or flooded cave, outside Playa del Carmen, Mexico. The Yucatan Peninsula is dotted with thousands of these interconnected limestone caves, which are fed by a ...

Add articles to your saved list and come back to them any time. Richard Harris has been through a lot since he was part of the international team that miraculously rescued 13 members of the Wild Boars ...