A military bunker located near Saint-Malo, France, at coordinates 48.6807° N, 1.9884° W. The region surrounding Saint-Malo was heavily fortified during World War II as part of the Atlantic Wall, a coastal defense system constructed by Nazi Germany to repel Allied invasion. While the specific structure designated '622SK' is not detailed in available records, its location places it within a dense network of coastal fortifications, many of which were built to house artillery, machine guns, or observation posts overlooking the English Channel.
The bunker's designation '622SK' follows the German Regelbau numbering system used for standardized bunker designs during the occupation of France. Such structures were typically constructed using reinforced concrete and integrated into the natural terrain for camouflage and protection. Though many of these bunkers were damaged during the Allied liberation of Normandy and Brittany in 1944, others remain intact and are now subjects of interest for military history enthusiasts and urban explorers (urbex).
No evidence from available sources indicates that this bunker was ever used for nuclear, chemical, or biological weapons storage. France’s nuclear program, which began in the 1960s under Charles de Gaulle, was centered in the Sahara Desert and later at sites in mainland France such as the Îles du Levant and the Plateau d'Albion—none of which are near Saint-Malo. Therefore, while the structure is historically significant as a WWII coastal defense installation, it has no confirmed connection to France’s later nuclear deterrent infrastructure.
Today, the bunker likely remains in a state of partial decay or repurposing, as many Atlantic Wall structures have been left to nature or converted into private property, museums, or hiking landmarks. Its preservation offers tangible insight into the military engineering of the era and the strategic importance of Brittany’s coastline during the war.