Climate: A warmer area well to the east of Napa Valley proper, but still moderated by both altitude and prevailing winds coming off Suisun Bay to the Southeast.
Soils: Volcanic in origin, with basaltic red color, shallow with limited water retention, so irrigation is often essential.
Principal varieties & characteristics: Cabernet Sauvignon, Sangiovese: Bright berry and cherry fruit, and more acidity than wines from Stags Leap District. Chardonnay: Crisp, flora, aromatic, with distinctive pear-mineral flavors and bright acidity.
Principle Wineries: