Andrew Geoffrey Vineyards’ 13 acres of red wine grapes are situated within a 60 acre parcel of prime hillside vineyard property on the highest slopes of the Diamond Mountain District sub-appellation of the Napa Valley. Diamond Mountain is located along the Mayacamas mountain range between St. Helena and Calistoga. Diamond Mountain is well known and recognized for its diversity of volcanic soils, varied micro-climates, and generous amounts of winter rainfall. Red wine grapes grown on Diamond Mountain have an outstanding reputation and Diamond Mountain red wines possess a strong consumer recognition.