Accessible only from Sonoma, yet located in Napa, Lovall Valley is an elevated secluded valley just above Carneros on the Napa ? Sonoma county line. Lovall Valley sits tucked away between Sonoma Valley, Carneros and Mt. Veeder. This is the coolest region in all of Sonoma and Napa and combined with the loamy-clay soils ideal for Bordeaux varietals produces a merlot with naturally small berries for greater intensity of flavor.