Ara trium Galliarum

The Ara trium Gallic, German: " Altar of the Three Gauls " (also ara Romae et Augusti ), was a Roman sanctuary at Lugdunum, now Lyons. The altar was dedicated to the goddess Roma and the Roman emperor.

Drusus had this site set up as part of the preparation for his large-scale Germania campaign in the 2nd decade of the 1st century BC. Met here every 1st August of each year the Concilium provinciae, the county council, the Gallic provinces, to which the Gallic tribes sent representatives. A provincial priest took over the presidency. Task of the Diet were the payment of the Emperor victim and the alignment of games in honor of the emperor ( imperial cult ). In this way the subject Gallic tribes expressed their loyalty to Rome.

Analogous to the Ara trium Galliarum was Ubiorum in the oppidum, now Cologne, the Ara Ubiorum for the Germanic County Council.

To commemorate the establishment of the ara Romae et Augusti coins were minted, the so-called Lyon Altar series. The embossing series of these coins are an important focal point for chronological dating of the find sites of the Augustan German campaigns.

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