How did St Ninian's journey through Pictland reflect the earlier movements of the Roman legions?

St Ninian's journey through Pictland mirrored the earlier movements of the Roman legions by following the same line of penetration. His missionary route from Candida Casa through various regions of Pictland was similar to the paths previously taken by Roman forces.

St Ninian's missionary journey through Pictland is noted to have followed the same route as the Roman legions before him. This path began at Candida Casa and extended through the Clyde basin to Glasgow, Stirling, Strathmore, and further north into Aberdeenshire and Sutherland. The alignment of his route with that of the Roman legions suggests a strategic use of established pathways, which facilitated the spread of Christianity in these regions. After Ninian's death, other missionaries continued to follow this route, further cementing its significance in the evangelization of Pictland.