Ribera del Duero is an important wine-producing area in Castilla y Leon, northern Spain. Its reputation is largely thanks to the high-quality of its red Tempranillo-based wines, the best examples of which are renowned throughout the world. The capital of Ribera del Duero is the historic town of Aranda de Duero, which boasts a series of antique underground cellars (bodegas) built to store wine. The interconnecting cellars reach a depth of 40ft (12m) in places. Despite a long history of winemaking, Ribera del Duero was not awarded DO status until 1982. A corresponding Consejo Regulador (wine-regulating authority) was then established to administer it.