We discovered a hidden hole in the cliffside that led us into a massive borehole cave. As we ventured deeper ... Photos show the moon taking a 'bite' out of sun. How Much McDonald's Franchise ...

Mysterious Pigeon Hole cave on Ireland's coast is linked to 'sacred fish' and fairies 4,000-year-old 'Altar of the Sun' tomb rediscovered in Ireland Painted on the rocks in red ochre pigments are ...

Fifteen people from various backgrounds have recently left a cave in south-west France after 40 days underground. The experiment was designed to see how the absence of clocks, daylight and ...

Why it's awesome: This deadly, yellow centipede has evolved to live in the Movile Cave — a pitch black, sulfurous underground system untouched by sunlight for more than 5 million years.

The otherworldly mist in Stargate appears to serve a similar role—a poisonous curtain that protects the deeper reaches of the cave. Offshore flooded caves, so-called ocean blue holes ...