Scotland during the Roman Empire for ritualistic purposes, in the west and north. Their geographical locations are highly restricted, which suggests that they may have been contained within a political or cultural frontier of some kind and the co-incidence of their arrival and departure being associated with the period of Roman influence in Scotland is a matter of ongoing debate. It is not known whether the culture that constructed them was "Pictish" as such although they would certainly have been known to the Picts. As Rome's power waned, the Picts were emboldened. War bands raided south of Hadrian's Wall in earnest in 342, 360, and
Vestiges of the Gallo-Roman wall, Grenoble protection of the 9-hectare urban surface of the Roman settlement. It served as a symbol of the status of Civitas. The wall was built up of small limestone blocks and was covered with plaster. Some parts of the wall were 4 meters thick and made up of limestone, pebble and tuileau rubble. These materials were held together by mortar. This defensive construction was between four and five meters thick. The two doors of the surrounding wall were built on stone blocks reused from previous buildings such as funerary monuments. Close to the foundation of the Viennoise door, inscriptions can be