just re-cropped Liftarn's post his current post was too big (3560x3540 pixels) for my screen and i wanted to add this bird to my personal collection ;) current size is 10% => 356x354 pixels
Neolithic cave paintings found in Tassil-n-Ajjer (Plateau of the Chasms) region of the Sahara manually traced from public domain image at http://en.wikipedia.org/wiki/File:African_cave_paintings.jpg
Source: Library of Congress Country Study of Algeria