Baja California Rock Art Dated to 7,500 Years Ago

[Ivan Seeking]

"The ancient dates for the paintings cast little light on the mystery of who made them and why, but it suggests that whoever the painters were they came well before the Aztecs established their culture in central Mexico some 3,000 years ago."

http://news.nationalgeographic.com/news/2003/07/0717_030717_bajarockart.html

[I, Brian]

There's always somebody before the last person. ;)