Milecastle 23 (Stanley) was a milecastle of the Roman Hadrian's Wall. Its remains exist as a low, grass covered platform with traces of an external ditch (as Milecastle 25). It is located to the south of the B6318 Military Road around 1.5 kilometres (0.93 mi) west of its junction with the A68.
Milecastle 23 was a long-axis milecastle. The gateway type is unknown, though long-axis milecastles were thought to have been constructed by the Legio VI Victrix who were based in Eboracum (York).
The milecastle measured 15.24 metres (50.0 ft) across, and had broad east and west walls (the curtain wall at this point was also broad gauge). The width of the south wall is unknown.
The ditch at the point corresponding to the milecastle's north gate undergoes a slight change in profile in the bottom. Also, there is an 8-metre (26 ft) gap in the upcast mound at the same point. These features indicate the existence of a causeway, later removed. There was also evidence of an equivalent causeway across the vallum, and gaps in the vallum mounds (also removed).
1930 – The milecastle was located by T Hepple and identified as a long-axis milecastle with broad east and west walls. The traces of the milecastle ditch were also noted.
1952 – The corresponding part of the vallum was surveyed, and the possible previous existence of a causeway discovered.
1966 – English Heritage Field Investigation. It was noted that the site was marked by an earth mound 1.2 metres (3.9 ft) high, extensively spread by cultivation. The ditch was visible as a wide but superficial depression around the South, East and West sides.
1989 – English Heritage Field Investigation. It was noted that the milecastle survived as a platform up to 1 metre (3.3 ft) high. The ditch was superficial but surveyable to the south and east. The possibility of the milecastle being a long-axis milecastle was restated.
Each milecastle on Hadrian's Wall had two associated turret structures. These turrets were positioned approximately one-third and two-thirds of a Roman mile to the west of the Milecastle, and would probably have been manned by part of the milecastle's garrison. The turrets associated with Milecastle 23 are known as Turret 23A and Turret 23B.
No surface traces remain of Turret 23A (Stanley Plantation). Its position was established in 1920, though its remains lie beneath the B6318 Military Road.
Location on Ordnance Survey 1:25 000 map: 55.015963°N 2.047949°W / 55.015963; -2.047949 (Turret 23A)
No surface traces remain of Turret 23B (Wall Fell). Its position was established in 1920 purely by reference to the position of Turret 23A, though this cannot be confirmed as remains lie beneath the B6318 Military Road.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
Milecastle 23 (Stanley) was a milecastle of the Roman Hadrian's Wall. It is recorded in the Pleiades gazetteer of ancient places as a fortlet site from the Roman period in Britain.
Milecastle 23 (Stanley) is classified as a Roman fortlet — 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 23A (Stanley Plantation) (0.5 km), Turret 22B (Stanley) (0.5 km), Turret 22A (Portgate) (1 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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