63. How big was the Hadrian’s Wall ditch?

Although a single set of dimensions is often quoted for the Wall ditch, research has shown that considerable variation in both dimensions and form could be found. An average width is around 8.4m and the depth about 2.7m, but the extremes could range from 8m to 10m in width and 2.5m to 3.3m in depth.

Further reading: Breeze 2006; Welfare 2004