They dropped nearly 200 feet through waterfalls, fog, and absolute darkness before landing inside the largest cave room in ...

America’s vast landscape encompasses some of Earth’s most breathtaking natural wonders, from towering mountain ranges and ...

The marsupial lion, which vanished around 40,000 years ago, was a muscular ambush predator about the size of a modern lion.

Nestled under the streets of Louisville, in a former limestone mine, lies a cave full of holiday cheer. Lights Under ...