Note 76 — BOOK IV.
Aubrey Stewart translation
‘Strabo speaks of the “Iron Gate” as the place where the Danube ends and the Ister begins. Trajan’s bridge, of twenty or twenty-two stone piers with wooden arches, was built, A.D. 103, just below the rapids of the “Iron Gate,” which grind to powder the ice-blocks of winter, and save the piers from the shock which might otherwise destroy them.’—Murray’s ‘Handbook of Southern Germany.’ (S.)