In 1993, researchers exploring a cave in southern Italy found a sinkhole leading to a tunnel. At the end of the tunnel was a very strange sight indeed: ancient human remains embedded in the cave wall.
Though it could easily be explained, the appearance of the fossil – now known as Altamura Man – must have been quite startling. The remarkably well-preserved skeleton was covered in "cave popcorn"; tiny, spot-like marks, positioned all over the man's... [4404 chars]