"Napa Valley Rocks" digs into what makes the Napa Valley America's premier winegrowing region. Based on three research studies about the science behind the appellation, this 20 minute video explores the unique geological formation of the valley, why it has the ideal climate to grow wine grapes, grape growing and winemaking techniques, historical milestones, and the tradition of leadership that is continued today. Narrated by wine educator and author Karen MacNeil, and featuring more than two dozen of the vintners and industry experts who have made Napa Valley legendary, "Napa Valley Rocks" will further your understanding of Napa Valley and its place within the world of wine.