It lies on the course of a Roman road, Icknield Street, which is now the site of the present Queen Elizabeth Hospital and the University of Birmingham in Edgbaston.

[2] The fort was around 200 square metres (2,153 sq ft) in area and was defended by a turf and earth bank with a timber wall, towers and double ditches.

[3] The fort was extended on three sides by the addition of defended annexes, which were used for tethering horses, storage and small-scale industrial activity such as ironworking.

[4] The fort was confirmed to date to the 1st and 2nd century AD in excavations that took place in the 1930s, starting in 1934, when the University of Birmingham Medical School was constructed.

Discoveries from excavations in the early 2000s included ovens and hearths, timber gateways, roads, the headquarters building, vessels from the Severn Valley and the Malvern Hills, and tableware from France.