Sources Where did these pictures come from? I did an Infoseek search for "stone picture" and then followed the resulting links to find pictures of the appropriate size and variety. The credits for the images are: Limestone formation:   www.4noel.com/bluffd/bluffd7.htm Stone-age skull:   users.hol.gr/%7Edilos/prehis.htm Sharon Stone:    www.sevastopol.com/SharonStone Back to intro