The Gask Ridge is the modern name given to an early series of fortifications, built by the Romans in Scotland, close to the Highland Line. Modern excavation and interpretation is pioneered by the Roman Gask Project and directors Birgitta Hoffmann and David Woolliscroft.
The name "Gask Ridge" refers to the 10-mile (16 km) ridge of land to the north of the River Earn in Perthshire. In Scottish Gaelic, a gasg is a projecting tail or strip of land. In the early 20th century, a line of Roman signal-towers (or watch-towers) was discovered along this ridge between the Roman forts of Strageath and Bertha.
The Gask Ridge system was constructed sometime between 70 and 80 CE. Construction on Hadrian's Wall was started 42 years after completion of the Gask Ridge (from 122 to 130 CE), and the Antonine Wall was started just 12 years after completion of Hadrian's Wall (from 142 to 144 CE). Although the Gask Ridge was not a wall, it may be Rome's earliest fortified land frontier. The fortifications approximately follow the boundary between Scotland's fertile Lowlands and mountainous Highlands, in Perth and Kinross and Angus. The later Hadrian's Wall and Antonine Wall were further south, and, by taking advantage of the heavily indented coastline of Great Britain, were considerably shorter.
The principal forts of the Gask Ridge frontier system were (from south to north):Camelon, Drumquhassle, Malling/Menteith, Doune, Glenbank (fortlet), Bochastle, Ardoch, Kaims Castle (fortlet), Strageath, Dalginross, Bertha, Fendoch, Cargill (fort and fortlet), Inchtuthil (Legionary fortress), Cardean, Inverquharity (fortlet), and Stracathro.