‘Land of Plenty’ is what Napa meant to the region’s original inhabitants, the Wappo Indians. This valley, snug between the Mayacamas and Vaca mountains in Northern California, claims some of the most expensive agricultural land in the world, producing wines of ‘cult’ status. The main ecological factor of the region is the cool wind and fog that is sucked in from San Pablo Bay during the afternoon, cooling the vines. Temperature fluctuations from north to south can vary as much as 15 degrees, even though the valley is only 30 miles long and five miles wide. Due to these climactic differences, Napa Valley has many unique microclimates that have their own AVA designations. With over 300 wineries and 43,000 acres of vines, the Napa Valley AVA is certainly the land of plenty.