Palo Alto Urban Petroglyph Project
From Sally Applin
The Palo Alto Urban Petroglyph Project is a series of photographs taken in Palo Alto, California. It appears that workers, decided to use up some excess road tar. As a form of graffiti, it is wonderfully textured. The photo images were named based on the shapes they seemed to be to me at the time. Whilst there is some argument in the anthropology community as to whether or not these are "true" petroglyphs, they were named according to the best definition at the time.