The Covelo AVA is located about 45 miles north of Ukiah and encompasses Round Valley, Williams Valley, and the surrounding foothills. The bowl shaped basin of Round Valley is distinctly different from the long, narrow valleys more commonly found in Mendocino County. In addition, the soils are very deep loam. The high peaks surrounding the region effectively block any coastal influence, providing the Covelo AVA with a continental climate. The growing season here is shorter than other Mendocino growing areas such as Anderson Valley and the Yorkville Highlands, but the warmer daytime temperatures provide optimum opportunity for ripening.