Along with underground adventures, Mammoth Cave National Park in Kentucky offers great hiking and kayaking, too.

This family-friendly Arkansas cave is an adventure lover’s dream, offering an exciting and educational experience for everyone to enjoy together.

Pennsylvania hides an underground river that continues far beyond what anyone has mapped, shrouded in mystery.

For the first time in over a decade, the Apostle Islands National Lakeshore's ice caves are open to the public. The ice caves opened at 8:30 a.m. Monday, Feb. 16, according to the National Park ...

One day after the Apostle Islands ice caves opened to the public for the first time in more than a decade, the caves are again closed. An Apostle Islands National Lakeshore Facebook post said the ice ...

For the first time in over a decade, the Apostle Islands National Lakeshore's ice caves are open to the public. The ice caves opened Monday morning, according to the National Park Service's Apostle ...

Caves are one of the most mysterious habitats on earth, a habitat that is dark, lacks sunlight, has a constant temperature, and food is limited. However, after millions of years, some animals have ...

Rare sub-zero conditions briefly made the Lake Superior formations accessible before a winter storm closed them again. Kristine Hansen is a design, food and drink, and travel writer based in Milwaukee ...

UPDATE: The National Park Service closed the Apostle Islands ice caves on Tuesday, Feb. 17, due to a severe winter storm moving in. The park service says the caves might remain closed for several days ...

Valentine's Day looked different for everyone this year. For one person, a journey into one of Texas's deepest caves took a dramatic turn. A rock became loose and fell, striking a female researcher in ...