This is an early state of Barent Langenes's map of the region around the headwaters of the Vistula. The map of this historically significant part of Poland is detailed, with dozens of cities and towns labeled, and the many tributaries of Poland's most important river shown.

The towns of Zatoriensis [Zator] and Oswieczimesis [Oswiecim] give their name to the title of this map, while other prominent cities of the region can be located, including present-day Bielsko-Biala and Skoczow. The Duchy of Oswiecim dates back to the fragmentation of Poland in the 14th century, and it was split into several smaller duchies, including the Duchy of Zator in 1445. The Duchies would be rejoined with Poland shortly after, and these lands would remain Polish until the First Partition in 1772.

Oswiecim is, of course, most famous for its eponymous concentration camp, taken from the German translation of its name Auschwitz. The death camps would be located just west of the city, across a small branch of the Vistula.

This map first appeared in the 1598 edition of Langenes's Caert-Thresoor, published in Middelburg. Bertius would include it in his Tabularum Geographicarum beginning in 1600. The map would make no less than twelve appearances between 1598 and 1650 between the works of these two authors.