19/02/2023
The Antonine wall
The Antonine Wall, known to the Romans as Vallum Antonini, was a turf fortification on stone foundations, built by the Romans across what is now the Central Belt of Scotland, between the Firth of Clyde and the Firth of Forth. Built some twenty years after Hadrian's Wall to the south, and intended to supersede it, while it was garrisoned it was the northernmost frontier barrier of the Roman Empire. It spanned approximately 63 kilometres (39 miles) and was about 3 metres (10 feet) high and 5 metres (16 feet) wide. Lidar scans have been carried out to establish the length of the wall and the Roman distance units used. Security was bolstered by a deep ditch on the northern side. It is thought that there was a wooden palisade on top of the turf. The barrier was the second of two "great walls" created by the Romans in Great Britain in the second century AD. Its ruins are less evident than those of the better-known and longer Hadrian's Wall to the south, primarily because the turf and wood wall has largely weathered away, unlike its stone-built southern predecessor.
Construction began in 142 AD at the order of Roman Emperor Antoninus Pius, and took about 12 years to complete. Antoninus Pius never visited Britain, unlike his predecessor Hadrian. Pressure from the Caledonians may have led Antoninus to send the empire's troops farther north. The Antonine Wall was protected by 16 forts with small fortlets between them; troop movement was facilitated by a road linking all the sites known as the Military Way. The soldiers who built the wall commemorated the construction and their struggles with the Caledonians with decorative slabs, twenty of which survive. The wall was abandoned only eight years after completion, and the garrisons relocated rearward to Hadrian's Wall. Most of the wall and its associated fortifications have been destroyed over time, but some remains are visible. Many of these have come under the care of Historic Environment Scotland and the UNESCO World Heritage Committee.
The wall was intended to extend Roman territory and dominance by replacing Hadrian's Wall 160 kilometres (100 miles) to the south, as the frontier of Britannia. But while the Romans did establish forts and temporary camps farther north of the Antonine Wall in order to protect their routes to the north of Scotland, they did not conquer the Caledonians, and the Antonine Wall suffered many attacks. The Romans called the land north of the wall Caledonia, though in some contexts the term may refer to the whole area north of Hadrian's Wall. The land north of the Antonine Wall also ended up becoming the part of Scotland known as Albany.
The Antonine Wall was shorter than Hadrian's Wall and built of turf on a stone foundation, but it was still an impressive achievement. It was also a simpler fortification than Hadrian's Wall insofar as it did not have a subsidiary ditch system behind it to the south, as Hadrian's Wall did with its Vallum. The stone foundations and wing walls of the original forts on the Antonine Wall demonstrate that the original plan was to build a stone wall similar to Hadrian's Wall, but this was quickly amended. As built, the wall was typically a bank, about four metres (13 feet) high, made of layered turves and occasionally earth with a wide ditch on the north side, and a military way on the south. The Romans initially planned to build forts every 10 kilometres (6 miles), but this was soon revised to every 3.3 kilometres (2 miles), resulting in a total of nineteen forts along the wall. The best preserved but also one of the smallest forts is Rough Castle Fort. In addition to the forts, there are at least 9 smaller fortlets, very likely on Roman mile spacings, which formed part of the original scheme, some of which were later replaced by forts.The most visible fortlet is Kinneil, at the eastern end of the Wall, near Bo'ness.
There was once a remarkable Roman structure within sight of the Antonine Wall at Stenhousemuir, which took its name from the Roman "stone house". This was Arthur's O'on, a circular stone domed monument or rotunda, which may have been a temple, or a tropaeum, a victory monument. It was demolished for its stone in 1743, though a replica exists at Penicuik House.
In addition to the line of the Wall itself there are a number of coastal forts both in the East (e.g. Inveresk) and West (Outerwards and Lurg Moor), which should be considered as outposts and/or supply bases to the Wall itself. In addition a number of forts farther north were brought back into service in the Gask Ridge area, including Ardoch, Strageath, Bertha (Perth) and probably Dalginross and Cargill.
Recent research by Glasgow University has shown that the distance stones, stone sculptures unique to the Antonine Wall which were embedded in the wall to mark the lengths built by each legion, were brightly painted unlike their present bare appearance.These stones are preserved in the university's museum and are said to be the best-preserved examples of statuary from any Roman frontier. Several of the slabs have been analysed by various techniques including portable X-ray fluorescence (pXRF). Tiny remnants of paint have been detected by surface-enhanced Raman spectroscopy (SERS). Several of the distance slabs have been scanned and 3-D videos produced. There are plans to reproduce the slabs, both digitally and in real physical copies, with their authentic colours.A copy of the Bridgeness Slab has already been made and can be found in Bo'ness. It is also expected that lottery funding will allow replicas of distance markers to be placed along the length of the wall.
The wall was abandoned only eight years after completion, when the Roman legions withdrew to Hadrian's Wall in 162 CE, and over time may have reached an accommodation with the Brythonic tribes of the area, whom they may have fostered as possible buffer states which would later become "The Old North". After a series of attacks in 197, the emperor Septimius Severus arrived in Scotland in 208, and campaigned against the Maeatae (based in the central Midland Valley on either side of the Firth of Clyde – Firth of Forth line) and the Caledonians to their north. While he carried out substantial work on Hadrian's Wall at the time, there is no evidence of any attention being paid to the remains of the Antonine Wall during the campaigns of 208–210. References in Late Roman sources to Severus' wall-building activities led to later scholars like Bede mistaking references to the Antonine Wall for ones to Hadrian's Wall.
