ThompsonCanyon7.JPG [35/37] Headline: Prehistoric Pictographs damaged by overlaid historic Pictographs and petroglyphs and modern Graffiti Title: Thompson Canyon Mixed Period Pictographs Creator: Bernard P. Friel, a different perspective Copyright Notice: ©bp friel 2002 Description Writer: Bernard P. Friel Keywords: petroglyphs, Utah, A.D.1000, Anasazi, canyon country, Indians, pictographs, prehistoric rock art, southwest U.S., Thompsons Springs, Thompson Canyon, graffiti Description: Prehistoric Pictographs damaged by overlaid historic Pictographs and petroglyphs and modern Graffiti