The Sahara desert in its present form is not exactly ... This assertion was backed up by the findings of a rock art survey in eastern Sudan. The results were published in The Journal of Egyptian ...

The rock art of Tassili n'Ajjer ... and the evolution of humankind on the edge of the Sahara. This art depicts water-dependent species like the hippopotamus, and species which have been extinct in the ...

this site has one of the most important groupings of prehistoric cave art in the world. More than 15,000 drawings and engravings record the climatic changes, the animal migrations and the evolution of ...