Roman roads in Britannia the military road from Carlisle to Corbridge, was built under the Emperor Trajan (ruled 98–117 AD) along the line of the future Hadrian's Wall, which was constructed by his successor Hadrian in 122–132 AD. Scotland ("Caledonia"), including England north of Hadrian's Wall, remained mostly outside the boundaries of "Britannia" province, as the Romans never succeeded in subjugating the entire island, despite a serious effort to do so by governor Gnaeus Julius Agricola in 82–84 AD. However, the Romans maintained a system of forts in the lowland region ca. 80–220 AD to control the indigenous population beyond Hadrian's Wall and annexed
Vestiges of the Gallo-Roman wall, Grenoble Grenoble, J.B. Sajou, Paris, 1814 Vestiges of the Gallo-Roman wall, Grenoble The Vestiges (traces) of the Gallo-Roman wall are the remains of a fortification, constructed in Grenoble, France (formerly called Cularo) at the end of the 3rd century, under the reign of the Emperors Diocletian and Maximian. The status of Civitas marked the city of Cularo as an administrative capital of the Roman Empire. The Gallo-Roman wall was 1,150 meters in length, and had 39 semi-circular watchtowers which were 7.5 meters in diameter. It had two monumental gates decorated by inscriptions identifying the two Roman emperors. The Gallo-Roman wall played