
Hadrian in Britannia
Emperor Hadrian's visit to Britannia in AD 122 was the single most significant event in the province's Roman history, as it led directly to the construction of the famous frontier structure that bears his name: Hadrian's Wall.
Hadrian's reign (117–138 CE) was characterized by a shift from his predecessor Trajan's expansionist policies to one of consolidation and defense of the empire's existing borders. The Wall was the most prominent statement of this policy in the Northwest.
🧱 Hadrian's Wall: The Frontier
Construction: Building of the wall began shortly after Hadrian's visit in AD 122 and took at least six years to complete. It was primarily built by the three Roman legions stationed in Britannia (Legio II Augusta, Legio VI Victrix, and Legio XX Valeria Victrix).
Length and Location: The Wall stretched for 80 Roman miles (73 modern miles, or 117 km) across northern Britain, from Wallsend on the River Tyne in the east to Bowness-on-Solway in the west.
Purpose: The primary functions of Hadrian's Wall were:
Defense: To deter raiding parties from the unconquered northern tribes (the "barbarians") and slow down incursions.
Control and Administration: To serve as a regulated border where the movement of people, trade, and taxation could be controlled at designated gates (milecastles).
Symbolism: It served as a powerful, physical, and visual statement of the might and permanence of the Roman Empire, marking the clear northern limit of Roman control.
🏰 The Wall's Structure
Hadrian's Wall was not just a simple stone barrier but a highly complex military zone:
The Barrier: It was originally planned with a 10-foot-wide stone wall in the east and a turf rampart in the west, though the entire structure was eventually converted to stone. The total height, including the parapet, reached about 15 feet.
Milecastles and Turrets: A small fortified gateway, or milecastle, was placed every Roman mile. Between each milecastle were two turrets (observation towers), creating a pattern of observation points every third of a mile.
Forts: At intervals of about 7 miles, large forts were built directly on the Wall line to house the auxiliary troops (not the legionaries who built it) who manned the frontier.
The Vallum: A massive earthwork, consisting of a broad ditch flanked by two mounds, was dug behind the Wall, marking the definitive edge of the military zone to the south.
For nearly three centuries, until the end of Roman rule in Britain in 410 AD, Hadrian's Wall remained the defining feature of the province's northern frontier.
Hadrian in Britannia VIDEO






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