Alcubilla, at the edge of Castile
According to El Cantar, El Cid crossed through Alcubilla, “at the edge of Castile”, on the eighth day of exile. That is to say, Alcubilla, where there used to be a fortress on the top of its cone-shaped hill, was considered the edge of “civilized” Castile; beyond this point, to the south of the river Duero, there was a large borderland zone. It needs to be noted that King Alfonso VI had taken control over southern territories. Yet, laws were not so strict there.
Rev. PAB 27.12.18