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:
Landfront IJmuiden W.N. Regelbau Fl . en Atlantic Wall IJmuiden Fl SdOst Antiaircraft Battery SdOst Widerstandsnest ammunition bunker type Fl de Atlantikwall IJmuiden Fl SdOst Marineflugabwehrbatterie SdOst Widerstandsnest Munitionsunterstand Regelbau Fl own Janericloebe Landfront IJmuiden Velsen Regelbau Fl