Turret 4B, also known as Walbottle Dene Turret, was one of the small stone observation towers built at approximately third-of-a-mile intervals along Hadrian's Wall, constructed in the AD 120s under Hadrian and forming part of the integrated curtain-wall system between Milecastles 4 (Westgate Road) and 5 (Quarry House). Like other turrets in this stretch west of Pons Aelius (Newcastle), it would have stood roughly 6 metres square externally, projecting from the rear of the Wall, manned by a small detachment from one of the auxiliary garrisons stationed in the nearby forts.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
The turret formed part of the lowland eastern sector of the Wall, where the frontier ran through the relatively open terrain west of Newcastle, providing surveillance, signalling links to adjacent turrets and milecastles, and a controlled point of observation over the Wall's berm and northern approaches. It has no particular distinction within the system beyond its role as one component of the continuous frontier line.
The site lies in an area heavily disturbed by post-medieval coal mining, suburban expansion of west Newcastle, and the line of the Military Road (B6528), and no significant standing or excavated remains of this specific turret are recorded in the antiquarian or modern literature; its existence is inferred from the regular spacing of the Wall system rather than confirmed by excavation.
Turret 4B, also known as Walbottle Dene Turret, was one of the small stone observation towers built at approximately third-of-a-mile intervals along Hadrian's Wall, constructed in the AD 120s under Hadrian and forming part of the integrated curtain-wall system between Milecastles 4 (Westgate Road) and 5 (Quarry House). It is recorded in the Pleiades gazetteer of ancient places as a watch tower site from the Roman period in Britain.
Turret 4B 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 Milecastle 4 (Westgate Road) (0.3 km), Milecastle 5 (Quarry House) (0.4 km), Pons Aeli (0.8 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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