Puente Alto Vineyard, Cabernet Sauvignon Origen: Puente Alto Vineyard. Soil: It is alluvial, stony, poor in nutrients and highly permeable due to the gravel sub-soil. It produces plants of frugal growth, which bear clusters of small, concentrated ripe grapes. Climate:Semi-arid Mediterranean. Influenced by the Andes, this is the coolest part of the Maipo Valley. The larges swings in temperature from day to night prolongs grape ripening; concentrating fruit and intensifying aromas.