Deep within the limestone caves of southeastern Australia, archaeologists have uncovered hundreds of “finger flutings,” ...

Hidden in the darkness of a remote limestone chamber, a cluster of ancient finger marks has forced archaeologists to confront ...

The Lava River Cave exhaled chilled air. I put on my sweatshirt, despite the hot July day. Though I'd been warned about the sudden drop in temperature to a crisp 42 degrees, it was hard to believe I'd ...

Pitch-black darkness. Crushing squeezes, muddy passages, icy waterfalls. Bats and spiders. Abseiling over ledges into the unknown. How far would you go for a fossil? On a two-year retrieval mission of ...

If a thrilling and challenging adventure is what you are after, then the awesome limestone Gomantong caves of Sandakan Borneo ...

(via MinuteEarth) Krubera Cave, one of our planet’s deepest known caves, extends 2200 meters into the earth – that’s a depth of nearly six Empire State Buildings. Or at least, that's as far down as ...