Dawn Ryan (front), cave manager at Forestville/Mystery Cave State Park in southeast Minnesota's Fillmore County, and Krista McDermid from Zara Environmental during recent research to inventory animal ...

Just three years ago, a group of Idaho men traveled to an unnamed Western state and in an unnamed range of rugged mountains, hiked up a steep trail. At the top, they unraveled climbing ropes, stepped ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO — Southern California is home to ...

Missouri has a whole other world under the surface of the Earth. Far below the surface of Missouri, a state that is perhaps best known for Kansas City-style barbeque, Anheuser-Busch, and an odd ...

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

Carlsbad Caverns National Park in southeastern New Mexico is home to 119 known caves, including North America's largest cave chamber, the Big Room. When you purchase through links on our site, we may ...

Deep beneath the hills of eastern Spain, scientists stepping into a lightless cavern have stumbled on a world that feels ...

Cave explorers have traversed what’s now the deepest known cave in Australia. On Saturday a group of explorers discovered a 401-metre-deep cave, which they named Delta Variant, in Tasmania’s ...

Missouri has a whole other world under the surface of the Earth. Far below the surface of Missouri, a state that is perhaps best known for Kansas City-style barbeque, Anheuser-Busch, and an odd ...