England’s oldest cave-art site is covered with signs to ward off Evil Spirits (video)
A pair of "enthusiasts" from the U.K. underground-exploration group Subterranea Britannica spotted the marks during a cave tour
Artist carves skulls into pearl shells! (photos)
Incredible skill
Ancient temple tells the tale of an ice age-inducing comet collision (PHOTOS)
The stone is adorned with images of animals that seem to line up with the constellations of the Zodiac