This section of the vallum lies some distance south of the nearest section of Hadrian's Wall and survives mostly as an earthwork. In the area just south of Allolee, recent survey work has shown that the line of the vallum is not as shown on the Ordnance Survey map. Slight earthworks show that here, it lies a little further north. Where it survives as an earthwork the ditch measures up to 2.7m deep in places but the average depth is 1m. To be able to cross the ditch some crossing points were built by the Romans and these seem to have been made every 37m. This is a Scheduled Monument protected by law.