Architecture of Scotland a line drawn between the Tyne and Solway Firth. Elginhaugh fort, in Midlothian, dates to about this period as may Castle Greg in West Lothian. The Romans eventually withdrew to a line in what is now northern England, building the fortification known as Hadrian's Wall from coast to coast. Around 141 A.D. the Romans undertook a reoccupation of southern Scotland, moving up to construct a new "limes" between the Firth of Forth and the Firth of Clyde. The Antonine Wall is the largest Roman construction inside Scotland. It is a sward-covered wall made of turf circa 7 metres (20 ft)
Scotland during the Roman Empire to purchase truces from the natives, and eventually the spread of Christianity. The Ravenna Cosmography utilises a 3rd- or 4th-century Roman map and identifies four "loci" (meeting places, possibly markets) in southern Scotland. "Locus Maponi" is possibly the modern Lochmabenstane near Gretna which continued to be used as a muster point well into the historic period. Two of the others indicate meeting places of the Damnonii and Selgovae, and the fourth, "Manavi" may be Clackmannan. From the time of Caracalla onwards, no further attempts were made to permanently occupy territory in Scotland. The intermittent Roman presence in Scotland coincided with