Beat the summer heat by going underground. Arizona is home to famous caves, like Kartchner Caverns. Here are 5 of the best ...

When delicate cave formations are damaged, Carlsbad Caverns National Park calls on the fix-it skills of Michael Mansur and his growing legion of volunteers. Nothing good happens fast in a cave. Those ...

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, with strange rock formations and the occasional glow from naturally occurring ...

Explore Florida Caverns State Park, a hidden underground world with caves, crystal formations, and scenic trails unlike anything else in Florida.

SAN DIEGO — Southern California is home to countless natural wonders spanning the region’s diverse landscape. Among those destinations, hidden deep in the badlands of Anza-Borrego State Park, is a ...

Hidden beneath the Earth’s surface are caves filled with enormous crystal formations that look almost unreal. These ...

While Arizona is famous for its stunning landscapes and dramatic rock formations, some of the best things to see here are underground. Arizona has numerous famous caves — some readily open to the ...