The wine is made from 100% Garnacha grapes grown in the village of Cadalso de los Vidrios, which is located in the Sierra de Gredos. As part of the Sistema Central Mountain range, it forms the backbone of the Iberian Peninsula and is a sprawling system boasting a rich and diverse heritage of grape growing, with several unusual varieties- many are not grown elsewhere in Spain. The soils are decomposed granite which produces fine, elegant and age-worthy wines. The vines are planted between 700 to 1,100 meters above sea level. These high-altitude sites deliver wide diurnal temperatures which encourage a long, gradual ripening season for the fruit, producing concentrated flavors from the warm, sunny days coupled with fresh, balancing acidity from the cool nights. The very old bush vines are up to 90 years old and produce low yields of concentrated juice. They are mostly grown in small, terraced parcels with a northerly orientation and are hand-harvested.