In 2018, Ox Bel Ha was briefly overtaken as the longest explored underwater cave, as cave divers discovered a connection ...

Hidden beneath the surface, a pristine underwater cave can preserve traces of vanished worlds with a clarity that dry land ...

Long before the Sumerians pressed reeds into clay, humans may have already taken their first steps toward writing. Forty thousand years ago, in the depths of Ice Age caves, people began leaving behind ...