It was found that the walls were reduced to ground level beyond the edge of the roadway, but had the same plan as Turret 12B.

However, the platform (which occupied the South side of the interior of Turrets 12B and 13A), was too badly robbed for any trace to remain.

[5] The mortared walls were recorded as 1.22 metres (4.0 ft) thick, with the doorway lying to the east.

[2] Location on Ordnance Survey 1:25 000 map: 54°59′53″N 1°47′51″W / 54.998174°N 1.797620°W / 54.998174; -1.797620 (Turret 12A)[4] Turret 12B (North Lodge) is located beside the Military Road (at a point where the B6318 is diverted away from it, but it still exists as a narrow metaled track).

The platform was rectangular and occupied the south side of the interior.