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

The longest cave system in the world is named, rather fittingly, Mammoth Cave. Found underneath Kentucky’s Mammoth Cave ...

Deep inside a limestone cave on the Indonesian island of Sulawesi, a single human handprint has pushed the story of art back to at least 67,800 years ago. The stencilled outline, created when someone ...

The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have mapped 524 kilometers (325.6 miles) of a subterranean water 'web' near ...

The Tentative Lists of States Parties are published by the World Heritage Centre at its website and/or in working documents in order to ensure transparency, access to information and to facilitate ...

Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

Add Yahoo as a preferred source to see more of our stories on Google. An ochre hand stencil found in the jungles of Indonesia is the world’s oldest known cave painting, researchers believe, a finding ...

Every single one of America’s national parks is unique, with a beauty that’s entirely its own. “The park's cave system is the longest in the world, stretching over 426 miles, and offers visitors a ...

Beyond the staggering age of the rocks and their long-gone inhabitants, these ancient chambers are steeped in human history.

The Tentative Lists of States Parties are published by the World Heritage Centre at its website and/or in working documents in order to ensure transparency, access to information and to facilitate ...

If you've ever driven through Iowa and wondered what there is to see beyond the 15 million acres of row corn, you might consider looking below the surface. Incredibly, the so-called Tall Corn State is ...