13.269 grape-cultivated hectares. The "Oltrepò Pavese" (South of the River Pò) area, with a total of 42 villages located on the hills, is the 3rd most important area in Italy for D.O.C. wines after the Chianti and Asti areas. The morphological structures are mainly two: the lands on the low hills, made of marine sedimentary rocks with a high level of clay, and the higher lands containing gypsum. Both these terrains perfectly guarantee the typological features of different red and white wines produced in this area.