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In North Africa, Rome experimented with defensive systems by establishing a series of arrangements in controlled territories. With the arrival of the Romans in the province, “institutions” such as borders, border military protection, and limes, first appeared in so-called “transition” zones. In Mauritania Tingitana, only during the second phase of Roman colonization (40-284 AD) did the southern frontier became a crucial issue. The Romans implemented all kinds of limits: administrative, free under control by allies, military, and, lastly, official, in the form of limes. This leads to questions about the evolution of the implementation of this control system. From the Volubilis region hinterland to the limes of Sala, archaeological remains provide fresh evidence towards a contribution of the archaeological mapping of ancient Morocco.