This is a rare and very early copper plate engraving of northwestern Africa showing the regions that would become Morocco and Algeria and showing the southern coast of Spain and the Straits of Gibraltar. Berlinghieri's maps are the ones based on Ptolemy to be drawn on the original projection, with equidistant meridians and parallels. Berlinghieri paraphrased Ptolemy in Italian terza rima(a poetic form ), making this from the first atlas in vernacular Italian. It is beautifully engraved with stippled seas and a unique depiction of the mountain ranges. It has been argued among map historians that the plates were engraved by Francesco Rosselli.