The Aggitis River Cave in Greece is one of the largest and most spectacular river caves in all of Europe. It is located in the area of Drama.

Local porters ferry the expedition team’s equipment across an underground river to reach various chambers within the cave system. Author Neil Shea squeezes through a passage to enter a ...

To enjoy the caves safely and comfortably, wear shoes with nonskid soles and take a jacket. Complete your underground trips with a river trip or a walk on the River Styx Spring Trail. The least ...

One of Kentucky's most awe-inspiring attractions is Mammoth Cave National Park, which promises unique above and underground adventures and wows hundreds of thousands of visitors year after year.

For 16 years, the Buffalo National River has denied explorers access to Arkansas’s longest cave and hundreds of others. Some ...

Horseshoe Bay Cave, located under Frank E. Murphy Park in Egg Harbor, stretches over 3,103 feet, having been carved into the ...

The walls of Longhorn Cavern look more like a slot canyon than a typical karst cave. An ancient underground river eroded and sculpted a smooth channel through the limestone and the undulating walls ...

The deepest free-fall pit in the lower 48 United States, the Fantastic Pit features a staggering 586 feet (179m) drop - a ...

which manages the nearly 300-acre Camuy River Cave Park. Highlights of the tour include the largest stalagmite in Puerto Rico, glimpses of the underground river (and maybe some bats), and a 450 ...

On January 30, 1925, cave explorer Floyd Collins made history when he became trapped while exploring Sand Cave near historic Mammoth Cave. It took nearly two weeks to reach Floyd who was found dead of ...

Did you know the can explore an underground cave in Kentucky by boat ... One of their coolest tours is the "Red River Gorge Underground Cavern Glow," which takes paddlers through an abandoned ...