While exploring a massive limestone mine, we stumbled upon something unexpected – a hidden cave tucked deep inside. In this video, we venture beyond the main tunnels into untouched chambers, strange ...

Experts believe the modified stalagmites are evidence of a planned occupation of the caves by ancient societies.

From lively cafés and hilltop castles to scenic cobblestone streets, Slovenia’s capital city, Ljubljana, has plenty to ...

The steep limestone cliffs on the eastern side of the Rock of Gibraltar contain four caves with archaeological and paleontological deposits that provide evidence of Neanderthal occupation over a span ...

The recent discovery of a lunar lava tube hints at a hidden network of caves that could provide shelter for future explorers. NASA's Lunar Reconnaissance Orbiter (illustrated with Earth in the ...