OB Flak is a military bunker located in northern France, near the coast. The site is part of the extensive Atlantic Wall fortifications built by Nazi Germany during World War II to defend against Allied invasion. This bunker type was designed to house anti-aircraft artillery (Flak) to protect nearby strategic installations and coastal batteries from air attack.
The region around this location saw significant military activity during the war, particularly during the D-Day landings and subsequent liberation of France in 1944.