The largest Croatian cave system was discovered entirely by chance, and it revealed fascinating evidence of a 20,000 year old ...

A new protein analysis of Homo naledi skeletons reveals a curious twist—none of them seem to have Y chromosomes.

Add Yahoo as a preferred source to see more of our stories on Google. Kisatchie National Forest is a labyrinth of hiking trails, some of which lead to hidden lakes, swimming holes, and even a cave.

With over 400 mapped miles, Mammoth Cave National Park, just outside Bowling Green, Kentucky, is the longest known cave system in the world. The only way to see its many subterranean rooms and ...

Deep under the ground in the state of Kentucky lies a hidden world that feels almost like a fantasy. Mammoth Cave National Park is home to the longest known cave system in the world, with more than ...

A drought in Missouri’s Ozark region has exposed caverns not seen in decades, part of an ancient cave system that played a key role in the Civil War. Kevin Bright, owner of the Smallin Civil War Cave ...

Add Yahoo as a preferred source to see more of our stories on Google. Archeologists on a mission to see where a mysterious passageway under the world's longest known cave system goes are uncovering ...

Divers working inside a flooded cave system near Tulum, Mexico, recovered an approximately 8,000-year-old human skeleton from ...

Researchers say that the fossilized bones of "Homo naledi," so far found exclusively underground in South Africa, lack a key genetic male marker ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A previously unknown species of ancient shark has been discovered in ...

This one’s a grower. Mammoth Cave National Park in south-central Kentucky, home to the world’s longest cave system, has extended its fame. The National Park Service announced that explorers have ...