AVA area (also Carneros for short) in the region North Coast in California, It extends across borders in the two counties Napa and Sonoma extends. The name Carneros is derived from the Spanish word for "ram" and refers to the earlier use of this region as pasture for sheep by Mexican farmers. The Californian wine pioneer, who immigrated from Hungary, founded Agoston near the city of Sonoma Haraszthy (1812-1869) the historic winery Buena Vista Winery, The vineyards cover around 3,500 hectares of vineyards in a gentle hilly landscape with cooling sea breezes from the nearby Pacific. The dominant two grape varieties are Chardonnay and Pinot Noir, from which acidic still wines are made. The cool climate is ideal for the production of sparkling wines, The wines are also under the parent AVA Napa Valley marketed. Well-known producers with vineyards in this area are Beaulieu Vineyard. Charles Krug Winery. Codorníu. Mondavi and spunk (Mumm Napa).