Au Sommet is a 7-acre vineyard on Atlas Peak, in the Western Vaca Mountain Range in Napa Valley. It is a partnership between Heidi Peterson Barret, John Schwartz and Jim Barbour. The winemaker is Barret, who for more than 30 years has been a Napa Valley winemaker and has worked with such producers as Screaming Eagle, Grace Family, and Oakford Vineyards. She currently is the winemaker for Amuse Bouche, Jones family, Barbour Vineyards and others. She makes her own wines under the La Sirena label. At an elevation of 2,100 feet, Atlas Peak is one of the highest vineyard sites in Napa Valley. Au Sommet grows Cabernet Sauvignon and Petit Verdot in the shallow, volcanic soil of its Atlas Peak Vineyard, which is exposed to more sun and cooler nights than vineyards on the valley floor. Au Sommet makes just one wine so far, a premium, very limited production Cabernet Sauvignon which has won high praise from wine writers.