The Alcohol and Tobacco Tax and Trade Bureau (TTB) establishes the approximately 59,871-acre "Van Duzer Corridor" viticultural area in Polk and Yamhill Counties, Oregon. The viticultural area lies entirely within the established Willamette Valley viticultural area. TTB designates viticultural areas to allow vintners to better describe the origin of their wines and to allow consumers to better identify wines they may purchase. TTB also clarifies the boundary description of the adjacent Eola-Amity Hills viticultural area.