It is one of the six wine regions of Chile, the oldest and the one that accounts for 83% of the country's production. It stretches from the province of Chacabuco, in the Metropolitan Region of Santiago, to the provinces of Cauquenes and Linares, in the Maule Region. The Central Valley is, in turn, divided into four other subregions: Maipo, Rapel, Curicó, and Maule.