During the Middle Ages Western cartography knew practically nothing of the interior of Africa and reported, in an uncertain way, what was asserted by the Greek geographers of antiquity mostly by Claudius Ptolemy who lived in the imperial era in Alexandria in Egypt. In the map of North Africa entitled "Tertia Africae Tabula" published in Rome in 1478, the Siwa region is well indicated, even if it is too south-east of the Nile. This region called in Latin "Ammonica Regio" inclu