Certain that mountain side vineyards in Napa Valley could produce world class wines, in 1974 Robert Keenan purchased 180 acres in

the Spring Mountain District at an elevation of 1700 feet. Located on the eastern slope of the Mayacamas mountain range, Spring

Mountain District gained recognition as an American Vineyard Appellation (AVA) in 1993. The low vigor soils unique to the region were

known to create a stressful environment for vine growth, setting up perfect conditions to encourage vineyards planted on the steep,

rocky, mountainsides to produce wines of great concentration, structure, and pure varietal flavors.