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
Limes Britannicus Empire, there was no natural barrier such as wide river that crossed the entire island and whose banks could be relatively easily fortified against continuous attacks and plundering by the northern tribes. As a result, the Romans were forced to build artificial barriers there. First, they secured the land between the mouth of the Tyne and the Solway Firth (Hadrian) and, later, the isthmus between the Firth of Forth and Firth of Clyde (Antonine Wall). Around 108, the camp of "Eburacum" was rebuilt in stone and, from 120, it formed the base for the "Legio VI Victrix". In the years