Stretching for hundreds of miles beneath the surface, this is the largest cave system in the United States — a hidden world of rivers, chambers, and ancient stone carved by time itself.

Fifty-two fossils of gigantic pandas found in China’s Shuanghe Cave, the longest cave in Asia, reveal the species’ evolution.

Highlights of the five-night trip include seeing the cave’s own rainforest and a calcite wall called the Great Wall of Vietnam. Vietnam is home to the world's largest cave. It's so vast that it has ...

Looking for an adventure that’s cool (literally) and completely out of the ordinary? The United States is home to some of the ...

A rare bite into the past. The fossilized tooth of a newly discovered ancient shark species – dating back about 340 million years – has been unearthed in the world’s largest cave system, officials ...

Though cave tours at the Mammoth Cave National Park have been suspended, visitors can still access campgrounds and trails.

Jewel Cave, South Dakota: America’s third-longest cave system offers wild tours requiring participants to scramble over ...

Hidden River Cave in Horse Cave was closed to the public for decades until a local effort to clean it out began.

National parks. It seems post-COVID, we can't get enough of the outdoors and the natural beauty of America. Kentucky boasts one national park (Mammoth Cave) and two national historical parks (Abraham ...