Ribera Baja: the most southern area, near the town of Tudela, in the Ebro valley with the Moncayo mountain range to the south and the Bardenas Reales desert 15 miles to the east. As this is the warmest of the zones with less rainfall, wines produced are full-bodied. Main varieties: Tempranillo, Garnacha, Viura and Moscatel Soils: loam, stone, limestone, marl, sand