A cave in Brazil warns that current global warming is progressing twice as fast as it did at the end of the Ice Age.

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 ...

Deep beneath New Mexico’s Guadalupe Mountains lies Lechuguilla Cave, one of the most remarkable systems ever discovered.

A piece of Kentucky's Mammoth Cave is featured in the Smithsonian's new exhibition, 'From These Lands', celebrating America's 250th anniversary.

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 ...

Geology doesn't often go viral, but one Scottish cave managed to do it by looking like something straight out of a video game. A TikTok video showing its jagged, gold-lit columns caught millions of ...

Most people come to Pictured Rocks National Lakeshore in Michigan’s Upper Peninsula for its namesake — the colorful, mineral-stained sandstone cliffs that line mighty Lake Superior. Those cliffs are ...

Ribbons of tangerine, butter and the palest of pinks stretch across the horizon as the sun continues its downward slide. “Sunset is officially 4:44 p.m., just four minutes away,” I tell my husband, Ed ...

Vandals have damaged Fitton Cave in Newton County. They removed several cave formations, including stalagmites and draperies, said Cassie Branstetter, a spokeswoman for the Buffalo National River. It ...