Bunker near Saint-Nazaire

A military bunker located near Saint-Nazaire, France, in the Loire-Atlantique department. Saint-Nazaire was a strategically important port city during World War II, heavily fortified by German forces as part of the Atlantic Wall defenses. The area contains several fortified structures, including the massive submarine base that remains one of the largest concrete bunkers in Europe. This bunker is situated in a region known for its extensive network of coastal fortifications and military installations from the German occupation period.