Experience the incredible Mammoth Cave in Kentucky, officially the world’s longest cave system with over 426 miles explored.

This incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region.

Beneath the idyllic resort towns of Mexico 's Yucatan Peninsula, daring explorers have uncovered a hidden world of grand ...

The longest known underwater cave in the world is even longer than we thought. As of the start of this year, cave divers have ...

From the Smokies to Hot Springs, celebrate the season with snowman scavenger hunts, sailing or skiing with Santa, and ...

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

The astonishingly well-preserved nasal cavity of a Neanderthal in Italy has finally settled one of the great debates in ...

South Dakota’s unforgettable landmarks showcase natural beauty history and adventure from towering monuments to hidden gems ...

A mammoth tooth reveals bacterial DNA from 1.1 million years ago, offering new clues about diseases and hidden ecosystems in ...

Mammoth Cave’s annual Cave Sing returns with choirs performing inside the iconic cavern, offering one of Kentucky’s most ...