The historic, four-generation-old Bates Ranch is located near Mount Madonna, in the southern end of the rugged Santa Cruz Mountains. The Cabernet Sauvignon grows at a peak altitude of 2,100 feet and an extreme southeast slope of 30%. A few hundred feet below, the old-vine Cabernet Franc, planted in 1972, is dry farmed in well-drained silt soils with inclusions of decomposed, iron-rich volcanic magma pushing up from the earth below.