Val di Mazara is the largest of Sicily’s three historical valleys and occupies much of the island’s western half. It encompasses the
Sicani Mountains, the Palermo Mountains and the southern slopes of the
Madonie range, underlain predominantly by calcareous rock. South of these uplands, sedimentary and mineral-rich soils extend toward the Mediterranean coast, forming one of Sicily’s major agricultural zones. Because of its size and internal diversity, Val di Mazara is often described as two broad sub-areas, divided approximately by the courses of the Freddo and
Belice rivers. West of these rivers lies the western sector, corresponding largely to the modern
province of Trapani. This area includes the coastal and inland zones associated with
Marsala production, as well as nearby highland vineyards and the island of
Pantelleria, whose volcanic soils and maritime exposure distinguish it from mainland western Sicily. East of the Freddo and Belice rivers, the valley includes a series of distinct landscapes. Near the coast, vineyards extend from
Menfi and
Sciacca inland through the Terre Sicane area to the upper
Belice Valley along the southern edge of the Sicani Mountains. Farther east, a band of coastal highlands stretches through the
Agrigento–
Caltanissetta interior as far as the
Salso River. The northern part of the valley includes the hills south of the
Madonie range around
Palermo, encompassing areas associated with the
Alcamo and
Monreale denominations. The climate is typically Mediterranean, with hot, dry summers, mild winters and strong maritime influence along the southern and western coasts. Inland elevations experience greater temperature variation. In contrast to eastern Sicily’s volcanic landscapes, most of Val di Mazara is defined by limestone, clay and sedimentary soils, which have historically favoured broad viticultural zones and large-scale vineyard plantings. == Viticulture ==