A military bunker located near the coast in the Morbihan department of Brittany, France. The designation 'MG-Scharte' is German, translating to 'machine gun embrasure,' indicating a likely origin as a small fortified position constructed during the German occupation of France in World War II. This region was part of the Atlantic Wall coastal defenses.
No specific historical records for this exact structure were found in the provided search results, which focused on France's post-war nuclear deterrent.