OB FK

OB FK is a military bunker located near Audinghen, France, in the Pas-de-Calais department. This structure is part of the extensive Atlantic Wall fortifications built by Nazi Germany during World War II to defend the French coastline against Allied invasion. The region around Audinghen was heavily fortified as part of the Widerstandsnest system, with numerous bunkers and defensive positions constructed to control access to the English Channel. The bunker's exact function and current condition remain unclear, though it likely served as a defensive position or observation post as part of the coastal defense network.