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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN DIEGO — Southern California is home to ...

Cave formation starts with a simple chemical reaction between water and carbon dioxide in the atmosphere, creating carbonic acid. This weak acid forms when rainwater combines with CO2, then ...

This hidden Florida cave feels like a national park wonder, with dramatic rock formations, quiet tours, and far fewer crowds than famous caverns.

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 ...

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 ...

BAYFIELD, Wis. >> Walking atop a frozen stretch of Lake Superior’s south shore, Jon Michels paused to look at a 30-foot-tall rippled ice wall cascading over a sandstone cliff cave. Then he noted ...

Dawn Ryan (front), cave manager at Forestville/Mystery Cave State Park in southeast Minnesota's Fillmore County, and Krista McDermid from Zara Environmental during recent research to inventory animal ...