Mendoza Province is Argentina’s most important winemaking region with approximately 167,704 hectares (414,405 acres) of vineyards, accounting for 70% of the country’s Wine production. Within the Mendoza appellation there are distinct sub-appellations, legally recognized as “Indicaciones Geográficas” (IGs). Through extraordinary diversity in soil quality, altitude, and climate, Mendoza’s sub-appellation/IGs are essential in defining the terroir of Argentine wine. Wines labeled from a particular appellation/IG must be sourced 100% from vineyards in the IG.