Iberian petroglyph stork automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Cig%C3%BCe%C3%B1a.png
Iberian petroglyph domesticated animals automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Pe%C3%B1apascuala.png
Iberian petroglyph woman automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Idolo_de_Despe%C3%B1aperros.png
Iberian petroglyph man with ax automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_hacha.png