Turret 41A, known as Caw Gap turret, is one of the recessed stone watchtowers built into Hadrian's Wall, sited dramatically where the Wall descends into the natural gap at Caw Burn between Winshields and Cawfields crags. Like other turrets on this central sector, it was constructed in the 120s AD under Hadrian and likely remained in intermittent use into the later 2nd century before being abandoned and demolished, a pattern seen across many central-sector turrets when the garrison strategy shifted.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
Its position at a natural break in the crags gave it a tactical observation role over a potential crossing point in the Whin Sill, complementing the line-of-sight system between Milecastles 41 (Shield-on-the-Wall) and 42 (Cawfields). Like its neighbours, it functioned as a signalling and surveillance post rather than a barrack, manned by a small detachment drawn from the nearest auxiliary fort, probably Aesica (Great Chesters) or Vercovicium (Housesteads).
The turret was identified and consolidated as part of the broader 19th- and 20th-century clearance of the Wall in this sector, with its low foundations and recessed plan visible on the ground; it conforms to the standard short-axis turret type roughly 4 m square internally with a stone-built ground floor. No major published excavation specific to 41A has produced a substantial finds assemblage, and detailed strat
Turret 41A, known as Caw Gap turret, is one of the recessed stone watchtowers built into Hadrian's Wall, sited dramatically where the Wall descends into the natural gap at Caw Burn between Winshields and Cawfields crags. It is recorded in the Pleiades gazetteer of ancient places as a watch tower site from the Roman period in Britain.
Turret 41A (Caw Gap) is classified as a Roman watch tower — a military site in the Pleiades ancient world gazetteer. Roman Britain's archaeology encompasses thousands of sites ranging from legionary fortresses and marching camps to villas, temples and towns.
Several Roman sites lie within a short distance, including Turret 41B (Thorny Doors) (0.5 km), Hadrian's Wall (0.5 km), Milecastle 41 (Melkridge) (0.5 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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