Via MSNBC:
In the mountains of northeastern Mexico, archaeologists have unearthed thousands of ancient paintings on the walls of caves and ravines from a time before Spanish rule.
The rock art offers rare evidence from native cultures living in the area around the Sierra de San Carlos, a mountain range in Mexico's state of Tamaulipas, researchers say.
Almost 5,000 of these paintings were found across 11 different sites in the region, the researchers said. Created with red, yellow, black and white pigments, the images show animals from deer to lizards to centipedes, as well as people. Depictions of tents, hunting, fishing and possibly astronomical charts also offer a glimpse into the life of this mysterious culture....
