Randy Dunn began making wine while studying oenology at the University of California at Davis, and he never stopped. Dunn worked for years at Caymus and in 1978 he and his wife purchased a vineyard on Howell Mountain in Napa Valley. In 1979 the couple started their winery and released their first Cabernet Sauvignon in 1981. Dunn Vineyards Cabernet Sauvignon Howell Mountain is recognized as one of the most consistent, massive and well-made wines in Napa Valley. The vineyards are in the Howell Mountain district which, at 2,000 feet above sea level, gets more sun and less fog than vineyards on the valley floor. Rich volcanic soil is part of the terroir. Dunn’s vineyards are planted entirely to Cabernet Sauvignon grapes and the oldest vineyard was planted in 1972. Dunn produces 2,000 cases annually of Cabernet Sauvignon Howell Mountain, the flagship wine, and about 2,000 cases of Napa Cabernet Sauvignon.