Roman Cumbria to Wallsend on the Tyne estuary, with additional military installations running down the Cumbrian coast from Bowness to Risehow, south of Maryport, in an integrated fashion (and with forts at Burrow Walls and Moresby that were perhaps not part of the system). Historians believe that the Turf Wall from the River Irthing to Bowness-on Solway was rebuilt in stone in two stages. The most easterly five miles were rebuilt at the time of Hadrian, with the remainder being rebuilt after 150 AD. However, this is open to dispute: it is uncertain whether the building works in the second half of
Roman Cumbria the German frontier, (or possibly both). Hadrian, who was something of an amateur architect, came to Britain in 122 AD to oversee the building of a more solid frontier (along with other measures elsewhere in England). It is possible that Hadrian stayed at Vindolanda (in present-day Northumberland) while planning the wall. Building of Hadrian's Wall along the line of Agricola's earlier garrisons began in 122 AD and was mostly completed in less than ten years, such was the efficiency of the Roman military. It ran from Bowness on the Solway Firth across the north of the county and through Northumberland