Cachapoal Valley northern of Rapel Valley warm, cut off from maritime influences fertile valley floor > large volume, inexpensive wines CS, Carmenere, Syrah higher quality CS and Syrah from cooler eastern end at Andean foothills Colchagua Valley larger variety of wines warm fertile central part vs cooler, less fertile areas produces some of Chile's finest-quality and expensive wines Alpata = south-facing amphitheatre with cool breezes and poor soils