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 ...

A marble mine is built to extract stone, not uncover natural wonders - but that’s exactly what happened here. Deep inside the ...

It’s like entering another world that was built over tens of thousands of years. Caves offer an experience unlike any other, a chance to learn about the earth’s history and see the effect of the ...

Inside Look is a Fresno Bee series where we take readers behind the scenes at restaurants, new businesses, local landmarks and news stories. After a four-year closure due to natural disasters, Crystal ...

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 ...

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

Spooky, wonderous, stalactite-y: Crystal Cave in Sequoia National Park returns this summer season for guided tours after a four-year closure due to consecutive natural disasters in the national park.

In January 2006 Speleoresearch & Films and the Team la Venta started a three year exploration campain to discover the Naica cave, Chihuahua, Messico. "It seems like walking into an oven. You're hit by ...

Crystal Cave, one of the most popular attractions in Sequoia and Kings Canyon National Parks, will reopen for tours in May, the Sequoia Parks Conservancy announced Tuesday. Tickets will go on sale in ...

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 ...