Powerful explosions on the territory of the Norwegian fortress Oskarsborg during an air raid by Luftwaffe bombers during World War II in Western Europe.
The Oskarsborg fortress housed two batteries of 280-mm guns, which fired at the German heavy cruiser Blucher from a distance of 500 meters.
The fortress Oskarsborg photo source: National Archives of Norway.
Location: Oskarsborg, Norway
Photo time: 9 April 1940