Unter dem Westwind

(user summary)

This sourcebook provides detailled information abozt the north-western parts of the continent of Aventurien:
The Gjalkserland, where fierce ice-barbarians live, Thorwal, which more or less equal the Vikings of earth, and the two little and poor kingdoms of Nostria and Andergast, which are at constant war whith one another, and are laughed about in the rest of the continent.
History, culture, important persons and secrets are given for all of these regions.