Located in a slightly cooler region, this sub-AVA is known for producing powerful, balanced wines that have the ability to age gracefully.
Northern part of the Napa Valley AVA, just West of Calistoga
50F-90F during growing season, which is more moderate than other sub-AVAs in the area
Cabernet Sauvignon, Cabernet Franc, Petite Verdot
Though the first vineyard was planted here in 1860, the Diamond Mountain District did not receive AVA status until 2001.