The Alcohol and Tobacco Tax and Trade Bureau (TTB) is expanding the "Red Hills Lake County" American viticultural area in Lake County, California by approximately 679 acres. The established viticultural area and the expansion area are both located entirely within the larger Clear Lake and North Coast viticultural areas. 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.