A military bunker structure located near the commune of Colleville-sur-Mer in the Calvados department of Normandy, France. The site lies within the historic area of the Atlantic Wall fortifications built by Nazi Germany during its occupation of France in World War II. The specific designation 'Vf66' follows a German military nomenclature pattern (Verteidigungs-Front) common for bunker units in the region.
Current condition and exact historical function are not confirmed by available sources. The surrounding area is part of the Omaha Beach landing sector, a location of intense military history during the D-Day landings on 6 June 1944. The bunker is situated in a rural, agricultural landscape characteristic of the Normandy coast.