Prehistoric cave art - teen graffiti?
CAVE ART MAY HAVE BEEN TEEN GRAFFITI (Ancient Worlds News, 12/4/06)
Testosterone-fuelled boys created most prehistoric cave art, according to a
book by one of the world's authorities on this type of art.
http://www.abc.net.au/science/news/ancient/AncientRepublish_1614422.htm
