The good news is that there are noe many wines from south of the border that are worth seeking out, especially from the north western corner of the Baja peninsula, where 90 percent of Mexico’s vineyards –and most of the country’s top wineries- are located. Stretched across three small valleys (Guadalupe, Santo Tomás and San Vicente) that run from the barren landscape like thick green throw rugs scattered on a large, sandy floor.