The Ottens brothers' map shows the area from Istria to the Black Sea. Although it is printed on two plates, it covers an oversized area not abounded with toponyms and other data (e.g. the relief is completely ignored). It is in fact a political map, where most attention is devoted to borders, which are particularly well-marked. Both format and content of the map are very similar to de Wit's and Valk's maps. The territory of Croatia is divided into Slavonia, which is located between Sava and Drava, from Belgrade to the Sutla River, so it includes Zagreb, Zagorje and Međimurje, then Croatia, which is south of Sava and includes the area from the eastern coast of Istria to Primorje to the south and almost to Jajce in the east, and to the great Dalmatia with Herzegovina, which goes north almost to Sarajevo, which is moved much more toward north than it actually is. Bosnia is therefore intertwined between increased Dalmatia and the Sava River, but the Drina river is moved toward east, so Bosnia occupies much of Central and Southern Serbia, Kosovo and a good part of Macedonia. It is interesting that the hinterland of Primorje includesa separate territorial unit of Morlakia, which is going to arouse European imagination only fifty years later in the work of Alberto Fortis.