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(modern Salzburg). In the territory of the Alauni the developing Roman site of I. (etymology disputed) on the left bank of the Salzach replaced the Celtic hill settlements on the Rainberg, the Festungsberg and the Kapuzinerberg in the later years of Augustus' reign (beginning 1st cent. AD). I. was built at the junction of the northern road along the crest of the Alps from Bregenz (Brigantium) and the long distance road from Aquileia leading over the Radstädter Tauernpass, and was raised to the status of mu…