According to the National Park Service, the cave system is “still being explored with no end in sight.” While Wind Cave ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. McGinnis' nail tooth (Clavusodens mcginnisi) depicted hunting a crustation in a reef-like ...

There are plenty of "must-visit" bucket list destinations around the world that don't live up to the hype. Places you see on travel blogs that look out-of-this-world gorgeous in photos, but are ...

Imagine the surprise of young lumberjack, Ho Khanh, a native of Vietnam's then-sleepy Phong Nha township, when he saw enormous, ethereal columns of fog billowing out of the ground, like the earth ...

Aside from drawing more tourists, not much has changed at South Dakota ’s above-ground attractions such as Badlands National ...

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 ...

Mammoth Cave, the world's longest known cave system, stretches 426 miles under Kentucky. The cave's limestone began forming 330 million years ago when the region was submerged under an ocean. Visitors ...