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Icosium was a Berber city that was part of Numidia which became an important Roman colony and an early medieval bishopric in the casbah area of actual Algiers.
This inscription by a certain Aphrodisius was found under the old city hall of Algiers.
This altar was dedicated by a certain Marcus Aurelius Decimus to Sol Mithras and other gods in Diana, Numibia, present Argelia.
Slab found at Tazoult-Lambèse dedicated to the Unconquered god Sol Mithras by the governor of Numidia Marcus Aurelius Decimus.