Beneath the Caucasus mountains Russian cavers made a terrifying discovery: blind creatures, freezing waters, and something far worse—suspended in the dark.

At a site known as Natural Trap Cave, a team of scientists are rappelling down to uncover the secrets of what the Earth was ...

Mining continues at the Continental Pit. Nearby is the Berkeley Pit, a site for acid mine drainage that poses an opportunity ...

Now, the caves deemed by scientists to hold the key to understanding where humans came from, are open again to anyone visiting South Africa.The Sterkfontein Caves yielded numerous fossil discoveries ...

In 1905, a 13-year-old boy, Ben Sands, stumbled upon a remarkable discovery deep within the Craighead Caverns in Tennessee.