A military structure designated Vf67 is located near Klaaswaal in the province of South Holland, Netherlands. The precise nature, historical context, and current condition of this site are not confirmed by available sources. The region has a history of military fortifications, particularly from World War II and the Cold War era, but no specific information links this designation to a known bunker type, construction date, or operational history.
Further local archival or field research would be required to verify its existence and characteristics.