Deep within the outer reaches of Pettyjohn Cave, explorers uncovered an extraordinary crystal formation hidden far from known ...

Jewel Cave, located 13 miles west of Custer, has more than 208 miles of “mapped and surveyed passage ways,” with hundreds of suspected passages yet to be explored, according to the National Park ...

When I discovered that Crystal Grottoes Caverns is the only publicly accessible cave in Maryland and has more formations per ...

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

Wisconsin is home to 50 state parks and 18 National Natural Landmarks. We’ve also got a village known as the troll capital of the world! With so many unexpected adventures and places to discover, why ...

The Chihuahuan Desert is a sparse but stunning ecosystem straddling the border between Northern Mexico, Southern New Mexico, and West Texas. High in elevation and low in humidity, the desert plays ...

Crystal Cave, located in Sequoia National Park, will reopen to the public on May 23 after a four-year closure due to fire and weather damage. Visitors can purchase tickets for guided tours starting ...

Being part of the United States drift. This region debuted has some very interesting geography. It gives us *** unique opportunity to start our exploration. Not from the historic north end, not from ...

Just two weeks after an Indiana woman made headlines by finding a crystal resembling fried chicken, the National Park Service has unveiled an equally strange formation in a remote South Dakota cave ...

Add Yahoo as a preferred source to see more of our stories on Google. After a four-year closure, Crystal Cave is inviting visitors to "marvel at its underground splendor," Sequoia Parks Conservancy ...