This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Bohus cropped. en Detail from swedish map of the surroundings of Bohus fortress during siege in August Norwegiandanish fortress Bohus with town Kunglv Obstacle in the river Gta lv denying Sweden the use of the river Incircled is defense redoubt guarding the riverobstacle and is at the same time part in the outer defense of the