Dating back to Etruscan times, Marche’s wine making history has long been influenced both by its culture and its climate. Located in central Italy between the Apennine Mountains and the Adriatic Sea, the region has a number of terroirs which are suitable for grape cultivation. Clay and limestone-rich soils contribute to this distinctive terroir and vary according to the changing topography. From the rolling coastal hills and the influence of the mountain chains and rivers, producers in Marche have both warm and cool climates to utilise. The Marche’s vineyards cover 25,000 hectares and produce almost two million hectolitres of wine annually. The majority of this is sold as table wine or under the title IGT Marche, with about 20% sold under the region's 12 DOC and 5 DOCG titles. The majority of DOC classifications in Marche cover both red and white wines. Known primarily as a white-wine region, the amount of whites and reds produced in Marche are actually almost equal. The main regional white is Verdicchio, a dry, characteristically flavoured wine made from at least 85% of the grape with the same name. The Marche has grown the Verdicchio grape for over 600 years, with the finest expressions of the wine found in the DOCGs Verdicchio dei Castelli di Jesi and Verdicchio di Matelica. Among the red wines, the finest are typically made from Montepulciano and Sangiovese grapes, the most known wines from these being Rosso Conero and Rosso Piceno