M272 in Bau

A military bunker located near Saint-Nazaire, France, identified by the designation M272 in Bau. The specific function, construction date, and historical context of this structure are not detailed in the provided search results. The region of the Loire-Atlantique department has a significant military history, including coastal defenses from World War II and Cold War-era infrastructure, but no direct link to this specific site is confirmed by the available information.