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 ...

The deepest cave in the Western Hemisphere — the Sistema Huautla in Mexico — is even longer than originally thought, scientists and cavers have discovered. Cave explorers expanded the map of Sistema ...

Peeling back the layers of our Earth’s crust, scientists have unveiled an astonishing underground realm in the United States.

Discovered in the year 2000, the Cave of Crystals sits some 300 meters (984 feet) below the surface of the Sierra de Naica Mountain in Chihuahua, Mexico. Home to some of the largest known crystals on ...

Traveling around Eagle County, it is easy to wonder about the interesting geological features that dot the landscape. While we are blessed with abundant mountain peaks and canyons, there is one ...

Beneath the surface of an otherwise unassuming National Park, a labyrinth showcases hundreds of millions of years of geologic history. Each shade of tan layered on the walls represents a different era ...

Descending the staircase into the mossy pit leading to the cave entrance, there’s an immediate chill that feels out of place ...