The salt monopoly of Naval Historical milestone · Naval, Somontano de Barbastro, Huesca Image of Naval, not of the place itself. Jaime I, who reigned between 1213 and 1276, granted Naval the monopoly on the sale of salt in much of what is today the province of Huesca; for centuries the salt works of Iruelas and La Rolda sustained the village's economy. 1274 Photo: Hovallef (CC BY-SA 4.0) What to see and do in Naval