Homeless people seen exiting of a cave dug along the American River Parkway in Sacramento County have raised questions about ...

Deep inside a labyrinthine cave in southwestern France, ancient humans who lived around 30,000 years ago carved horses, ...

Expedition leader Andy Eavis accesses a small algae-covered cave opening. He has been studying and exploring the cave systems below Gunung Mulu National Park since 1979. The British team found ...