Valdepeñas, which translates to "valley of stones," has been part of Spain's winemaking heritage since at least the 4th century B.C. The area is known not only for its long history of exporting wines but also for its tradition of fermenting wines in huge (1,600 liter) jars called tinajas. In centuries past, winemakers partially buried these large earthenware vessels in the earth, which helped keep the wine cold throughout the fermentation process. Today, of course, the jars have been replaced by modern equipment and production processes; Valdepeñas now sells more wine than any other Spanish DO except Rioja. The Valdepeñas region has long held a reputation for producing quality, value-priced wines.