Made from a combination of grapes on the steep, 35-acre Tephra Ridge Vineyard. Tephra (“ash” in Greek) is rock ejected by volcanic eruption. This historic vineyard is located at the north foothill of Howell Mountain. Its thin, gravelly loam and volcanic soils typify the finest Bordeaux variety sites, as do its climate, topography and vegetation – fir, madrone, black oak and ponderosa pine – yielding a rustic fruit profile.