Wine and wine tourism drive the economy in the valley, which is located an hour’s drive north-northeast of San Francisco.
Perfect for growing high-quality grapes, the climate is influenced by Napa Valley’s shape and location.
A Perfect Funnel
About 35 miles long and one to five miles wide, the tall, narrow valley is wedged between two mountain ranges.
The lush, green Mayacamas, which catch the coastal rainfall, form the western border. The Vaca Mountains rise arid and...