Aconcagua, 80km from the capital Santiago, north of Casablanca and south of Limari, is the last east-west transversal va… lley before the long, north-south Central Valley begins. Aconcagua is one of the five principal wine regions of Chile. It encompasses all wine-growing areas in ValparaÃso Region. The Aconcagua wine region is composed of three minor wine districts; Casablanca Valley, Aconcagua Valley and Leyda Valley. Aconcagua Valley is named after the highest peak in the Andes, Mt. Aconcagu