Turret 79A (grid reference NY23196229) has never been located, and its approximate position has been calculated in relation to the known position of neighbouring wall structures.[4] It is thought to be located approximately 400 metres west of Milecastle 79 where the route of Hadrian's Wall changes direction.[1] Hadrian's Wall itself is visible at this location as an irregular bank up to 14 metres wide and up to 1 metre high at the bend.[5]