Descending into Crystal Cave is so surreal that it feels like you're entering a movie set and at any moment Indiana Jones will come swinging through with his whip. The nearly 130-year-old cave is not ...

When Colossal Cave Adventure was first circulating among computer enthusiasts in the '70s, I wasn’t even born yet. I’ve never had the pleasure of experiencing the original spelunking adventure, but ...

A self-confessed ‘eccentric’ has spent 30 years hand-digging an other-worldly labyrinth of underground caves 20ft below the ...

Archaeologists and students digging in Blätterhöhle cave uncovered a 9,000-year-old fireplace (above), flint arrowheads and a bone harpoon. Photo from LWL-AfW Olpe / Michael Baales Inside a cave of ...

Finland has spent decades digging caves into its bedrock. Now, as Russia rears its head, nervous Finns want to know: “Where’s ...