Much of Sonoma County’s reputation for outstanding Bordeaux-style varietals can be attributed to the stellar combination of rich, complex fruit and tannins. The intense dark, full berry tones and concentrated tannins of the Cabernet Sauvignon are coming from the mountains, hillsides, and ridges of Alexander Valley and Knights Valley. The area is comprised of volcanic and rocky soil, being brick red in Alexander Valley and beige in Knights Valley along the slopes of Mount Saint Helena and the Mayacama Mountains.