The Antonine Wall, which runs across Scotland from the Firth of Forth to the Firth of Clyde, has been described as "Rome's Last Frontier," as it was the Empire's most northern outpost. But the real outpost, about which modern excavation is revealing more and more information, was the Gask Ridge in Perthshire. Research over the last 50 years has revolutionized our picture of the Roman occupation of the north of Scotland, well before the time of the famous governor Agricola. Moreover, the Roman remains can now be set more firmly in the context of the pre-existing native society.