Planted in 1992, the Roma's vineyard sits at the highest AVA peak of 1850 feet on Lone Tree Ridge overlooking the Anderson Valley.

The Vineyard is located 10 miles from the ocean, and 5 miles Northwest of Anderson Valley in Comptche's Surprise Valley.

Six Sigma Ranch elevation reaches 1700' in volcanic soils from the 11,000 year-old eruption of Mt Konocti volcano.