37. Were there any forts north of Hadrian’s Wall?

North of Hadrian’s Wall and situated on roads, there was a series of forts that have become known as the outpost forts. From west to east, these are Birrens, Netherby, Bewcastle, Risingham, and High Rochester. It has been suggested that the first three, rather than acting as forward observation posts for Hadrian’s Wall, were actually intended to defend friendly territory north of the Wall and that they were part of the original scheme for the Wall.

Further reading: Breeze 2006; Symonds and Mason 2009