Underneath the earth’s belly, a boat ride inside a 30-million-year-old all-water cavern, Penn’s Cave, reveals nature’s most ...

Montana has several state parks worth visiting, but if you want to see the very first one that offers limestone caverns, here ...

Learn key facts about Dames Cave Trail in Withlacoochee State Forest from hidden sinkholes to forest scenery so you can hike ...

Scientists have identified several caves carved by water and they may have held or have evidence of extraterrestrial life.

Sinks Canyon State Park is famous for its "disappearing river," but that's not all there is to see at the Fremont County ...

The oldest known cave painting on Earth is not a charging bison in Europe but a reddish pig on a limestone wall in Indonesia, ...

Deep in Central Oregon lies a short yet unnervingly narrow lava‑tube hike full of basalt corridors and tight passages where ...

Explorers in southern Spain have linked two deep caves into one “supercave system” about 16.4 miles long. The connection sits ...

The world is filled with beautiful places, but some landscapes go far beyond beauty, they border on the unbelievable. From ...

Florida may be best known for its soft-sand beaches, but the state is also home to many other beautiful natural wonders.

A ridiculous but instructive thought experiment involving deep time, plate tectonics, erosion and the slow death of the sun ...