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

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock A cave once known only to hunters and explorers is now helping to stabilize livelihoods for communities in ...

Divers in Mexico's Yucatan Peninsula say they have discovered the world's largest underwater cave. Underwater archaeologists discovered last week that the cave system known as Sac Actun, located near ...

Leah PelletierLocal Journalism Initiative ReporterRocky Mountain Outlook CROWSNEST PASS — Deep underground, with only the yellow hue of a headlamp illuminating the murky walls of the Yorkshire Pot ...