Cf. Prop. I. xvi. 29: “sit licet et saxo patientior illa Sicano, sit licet et ferro durior et chalybe.” Noricum, a district between the Inn, Danube and Alps, corresponding to the modern Styria, Carinthia, etc., was famous in ancient, as in modern times, for the excellence of its iron or native steel. Cf. Hor. C. I. xvi. 9.