Step off the desert trail and into Arizona’s longest cave, where crystal formations and subterranean wonders await.

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 ...

It’s like entering another world, built over tens of thousands of years. Caves offer an experience unlike any other, a chance to learn about the earth’s history and see the effect of the passage of ...

This post may contain links from our sponsors and affiliates, and Flywheel Publishing may receive compensation for actions taken through them. The world is full of amazing places. Though most people ...

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.

Add Yahoo as a preferred source to see more of our stories on Google. Carlsbad Caverns in Carlsbad, New Mexico. Nestled between national parks, big cities and places you may have considered “the ...

ALBUQUERQUE, N.M. — The Big Room at Carlsbad Caverns, a room that could fit more than six football fields and reach the height of a 30-story building, inspires awe among visitors, but it’s a nagging ...

Boulder, Colo., USA: A study published on Friday in the journal Geology uses isotopes of sulfur to fingerprint the sources of sulfuric acid that have carved unique and beautiful cave systems in the ...