While Arizona is famous for its stunning landscapes and dramatic rock formations, some of the best things to see here are underground. Arizona has numerous famous caves — some readily open to the ...

Let’s say you’re on the way to Needles. Alright, you’re probably not on your way to Needles. But say you’re headed to Las Vegas or Lake Havasu, and you’re looking for a fascinating stop along the way.

Named Colossal Cave, with more than two miles of passageways that have been explored and mapped, it is likely that there are still areas that have never been seen. Tours of the cave, where the ...

BENSON, AZ — Just south of Tucson lies one of Arizona’s hidden gems—Kartchner Caverns State Park, an active limestone cave system known for its rare, pristine formations and year-round underground ...

Below the Chihuahuan Desert in southeastern New Mexico, lies an extensive system of limestone caves, among them the famed Carlsbad Cavern, home to one of North America's largest underground chambers.

Below the Chihuahuan Desert in southeastern New Mexico, lies an extensive system of limestone caves, among them the famed Carlsbad Cavern, home to one of North America’s largest underground chambers.

Slovakia is home to some of the most fascinating karst caves in the world, which are a must-visit for adventure junkies ...