The region extends from the edge of the Massif Central to the Pyrenees and the variety of soils explains the diversity of grape varieties, as in all wine regions of southern France. The winemakers have kept many local grape varieties: Auxerrois in Cahors, iron Marcillac, len duras and the el in Gaillac, Fronton to Négrette, Abouriou in Marmande, manseng to Jurançon. This variety of grapes is the richness of the wines of South-West but the region also has varieties in common: Bordeaux trilogies in the basin of the Dordogne, Cabernet Sauvignon, Cabernet Franc and Merlot for the reds (Gaillac, Bergerac, Buzet), sauvignon, semillon and muscadelle for whites (Bergerac, Monbazillac), the tannat and both mansegs in the basin of the Adour (Jurançon, Madiran).
