A small, handsome, upland valley in Sonoma county separates the upper end of the Napa Valley from the lower end of the Alexander Valley. It was originally developed by Beringer Vineyards, and has since been joined by several growers and a prominent winery owned by British businessman Sir Peter Michael. The most impressive grape variety to date has been Cabernet Sauvignon, which embraces the heat that is trapped in the valley during the day, with the vines being cooled by refreshing breezes overnight.
