They are thought to have been used by soldiers advancing northwards, and by smaller groups employed in routine maintenance.

Chew Green and Bremenium, nearby Roman encampments on Dere Street, lie to the north and south.

[1][2][3] The camp, at grid reference NT 82017 05629, is on a spur of land, gently sloping to the south.

[1][4] The camp, at grid reference NT 81334 05818, is on a south-facing slope near the summit of Foulplay Head, with good views to the north-east, east and south.

There is a rampart up to 7 metres (23 ft) wide, with an external ditch visible in places.