Add Yahoo as a preferred source to see more of our stories on Google. Archaeologists have long studied rock art to determine the underground movements of early humans. They know humans were there, but ...

Researchers have discovered the remains of an ancient shark deep inside the world's longest cave system. The newly discovered shark, plucked from the walls of Mammoth Cave in Kentucky, lived around ...

The Mammoth Cave, located deep under the hills of Kentucky, is the longest cave system in the world with an officially ...

The surface is frozen, silent, and still. Beneath it lies a cave system known for both its beauty and its history. Divers enter through a small opening in the ice, descending into water just above ...

Most people think of visiting big cities, national parks, and beaches when they plan a U.S. trip. There’s hardly anyone who’s wondering what’s underground. The caves in the U.S. are where things get ...

An underground stream winds through a vast Illinois cave few people know about. Wade through cool water and explore one of ...

In 1845, John Moore and his sons were mining for lead in the Ozark Mountains when they happened upon a cave filled with stunning ancient mineral formations. Their discovery became known as Moore’s ...

A caver has been rescued after getting stuck in a cave system in the north-west Highlands. Assynt Mountain Rescue Team, whose volunteers are trained in underground rescues, were called to Allt nan ...

The National Park Service has announced another ancient shark discovery at Mammoth Cave in Kentucky. The latest find, named Macadens olsoni, had a unique curved row of teeth and lived around 340 ...