Thursday, May 23, 2013
The red, white, black and yellow images depict humans hunting, fishing and gathering, as well as animals such as deer, lizards and centipedes.
Click here or on 'view gallery' to see more pictures of the uncovered cave paintings
The 4,926 paintings were discovered in 11 different sites and are thought to have been created by at least three groups of hunter gatherers.
In one cave more than 1,550 images were found, including an image of an atlatl, a Hispanic weapon used for hunting that has not been seen before in paintings in the Tamaulipas region.