Explore the world's longest known cave system and see colorful, subterranean light displays in these incredible caves that ...

A section of South Dakota’s Wind Cave seen under normal white light (left image) transforms into something otherworldly when placed under UV light (right image). SAN DIEGO, March 25, 2025 — Deep below ...

Crystal Cave is about 10 miles north of Springfield in the southwest Missouri. It is a registered historic landmark that first opened to tours in 1893, making it the second oldest commercial cave in ...

Daniel H. James installs a drip rate monitor upon a flowstone in Grutas Tzabnah (Yucatán, Mexico) as part of the wider cave monitoring campaign. Stalagmites in Mexican caves reveal duration and ...