Blue Grotto is a cave that requires you to descend a ladder to enter, which immediately makes you feel more like an explorer and less like a tourist. The cave features beautiful blue-tinted ice ...

Meramec Caverns in Sullivan, Missouri, is serving up all the geological drama of the Southwest’s famous caves without the ...

Could a Moroccan cave hold a crucial piece of the puzzle of human origins? Hominin fossils dating back 773,000 years discovered in the country are bringing new evidence to the debate about the last ...

The symbols, discovered on 40,000-year-old artifacts in caves in southwest Germany, may have been a precursor to the first written language ...