Add Yahoo as a preferred source to see more of our stories on Google. While Arizona is famous for its stunning landscapes and dramatic rock formations, some of the best things to see here are ...

PHOENIX — You might have seen the 2005 horror film “The Cave,” where a group of adventurous scientists explore the deep, nether regions of a cave and discover a new species. University of Arizona ...

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 ...

PEACH SPRINGS, AZ — Located more than 200 feet below the surface near Peach Springs, the Grand Canyon Caverns and Inn offers visitors a rare underground experience filled with natural wonders and ...

BENSON, Ariz. — Deep inside the dark, damp caves of Kartchner Caverns State Park lies something that sounds more suited to a fairy tale than to a rock formation. The so-called Big Room holds the world ...

Getting your degree … underground? That's just a small overstatement for some UA geosciences students. Since 2001, Julia Cole's research group has worked in caves to develop regional climate histories ...

The world's deepest, darkest and quietest hotel room is gone for good. Staff at Grand Canyon Caverns, the roadside attraction in Peach Springs near the Hualapai Indian Reservation, announced on March ...

KARTCHNER CAVERNS STATE PARK, Ariz. -- Thirty years ago, two students from the University of Arizona stumbled onto a maze of caves that has since become the gem of the state's parks system. But by the ...

Escape the outside world on these eight wild treks through lava tubes, caverns, and abandoned tunnels across the U.S.

Exploring underground worlds has a magic of its own, and the 10 Most Popular Caves in the U.S. prove just how fascinating nature’s hidden chambers can be. These caves aren’t just geological wonders; ...