WN 013 (Ex Ha K 013 - WN 31d)

WN 013 (Ex Ha K 013 - WN 31d) is a German World War II defensive bunker located on the Atlantic Wall in northern France. This type of Widerstandsnest (resistance nest) was part of the extensive coastal fortifications built by Nazi Germany to defend against Allied invasion. The bunker's multiple designations indicate it was part of a larger defensive network, with 'WN' referring to its role as a resistance point and the alternative codes suggesting connections to other fortification systems.