7. What are the main components of Hadrian’s Wall?

From north to south: the counterscarp and glacis; the ditch; the berm; the curtain wall (for the Stone Wall) or rampart (for the Turf Wall), accompanied by regular milecastles and turrets and occasional forts; the Military Way; and the Vallum (Figure 2).

Diagrammatic section through the Wall

Further reading: Breeze 2006; Symonds and Mason 2009