Wall of Severus as the mid-5th century predating the 8th-century reign of the Saxon King Offa of Mercia by 300 years. Septimius Severus arrived in Caledonia in 208 after Picts began making a series of attacks and incursions since 197. During these military operations in Scotland, the Wall of Severus was reportedly built. Cassius Dio, a Roman historian who lived at the time of Severus, makes no direct mention to any new fortification but does allude to the existing Antonine and Hadrian Walls. Late Roman historians interchange the name Severan Wall with the Antonine Wall. Other historical writers like Bede - an 8th-century
Architecture of Scotland in the Roman era in the north-east (some of which may have been begun in the earlier Antonine campaign). These include camps associated with the Elsick Mounth, such as Normandykes, Ythan Wells, Deers Den and Glenmailen. However, only two forts in Scotland, at Cramond and Carpow (in the Tay valley) are definitely known to have been permanently occupied during this incursion. There is evidence that these campaigns are coincident with the wholesale destruction and abandonment of souterrains in southern Scotland. This may have been due either to Roman military aggression or the collapse of local grain markets in the wake of Roman withdrawal. After