A military structure identified by the local designation 'Vf HWB' is located in a rural area near Calais, in the Pas-de-Calais department of northern France. The region is historically significant for its extensive fortifications from multiple periods, including the World War II Atlantic Wall defenses constructed by Nazi Germany along the French coast. The specific purpose, construction date, and current condition of this particular site are not confirmed by the available information.
Without verified historical records or on-site documentation, its exact function—whether as a coastal battery, infantry bunker, or other military installation—remains uncertain. The structure represents one of many potential remnants of the 20th-century military heritage in this strategically important area.