"This immense cave represents the most important submerged archaeological site in the world, since it has more than a hundred archaeological contexts, among which is evidence of the first settlers ...

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 ...