We hiked deep into the woods to explore a 170-foot hole surrounded by mystery and legend—and what we found underground was breathtaking. Hidden beneath the surface was a crystal-filled cave system ...

We pushed farther than we ever had before - and it paid off. Deep in the outer limits of Petty Johns Cave, we stumbled upon a massive crystal formation hidden beyond the usual paths. In this video, we ...

The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed for four years, will be accessible again this summer. But to get in ...

Like the majestic General Sherman tree, lush Crescent Meadow and the awe-inspiring Congress Trail, Crystal Cave has long been among the greatest visitor attractions at Sequoia National Park.

The country is home to some of the most unique and record-breaking caves in the world, from crystal chambers to hidden lakes beneath the surface. Let’s learn more about these incredible places ...