We are producers of single-vineyard wines from Carneros, Napa and the high Mayacamas Mountains. We own and farm our vineyards; Poseidon Vineyard at sea level and Obsidian Ridge Vineyard at elevation 2,640'. We build our own barrels with oak selected from the forests of Tokaj, Hungary. We craft our wines in small batches, which is critical to our winemaking philosophy. Our tasting room is now open daily from 10am - 5pm at Cornerstone Sonoma.