Keywords: Advanced Search Howell Mountain Summit Lake Vineyards & Winery Excerpt: Summit Lake Vineyards is a small, family owned and operated winery located high above the Valley floor in the Howell Mountain sub-appellation. Read More →Wines/Liquors Produced: Cabernet Sauvignon, Zinfandel, PortHours: By appointment onlyPhone: 707-965-2488Address: 2000 Summit Lake DriveCity: AngwinRead More →