OB 2cm Flak is a military bunker located in France, likely part of the country's coastal defense infrastructure. The designation 'OB' typically refers to 'Objekt' in German military terminology, suggesting this structure may have been built during World War II as part of the Atlantic Wall defenses. The '2cm Flak' designation indicates it was designed to house anti-aircraft artillery, specifically 2cm flak guns used for air defense.
This bunker would have been strategically positioned to protect coastal areas from aerial attacks and to defend nearby military installations or civilian populations.