About 65 million years ago the pacific tectonic plate moved against the North American plate and formed two mountain ranges, the Mayacamas and the Vaca. Between these is the Napa Valley, a basin perfectly suited for high quality winemaking. In 1976 the blind tasting ‘The Judgment of Paris’ pitted the leading Californian wines against the French. Two wines, in particular stood out, the Chardonnay from California’s Chateau Montelena and Stag’s Leap’s Cabernet Sauvignon. This put California wines on the map.