Milecastle 33
| Milecastle 33 | |
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_Milecastle_33_-_geograph.org.uk_-_592666.jpg)
Milecastle 33 from the north
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 Milecastle 33
 Milecastle 33 shown within Northumberland |
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| OS grid reference | NY83087073 |
| Coordinates | 55°01′51″N 2°15′58″W / 55.030867°N 2.266110°WCoordinates: 55°01′51″N 2°15′58″W / 55.030867°N 2.266110°W |
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Milecastle 33 (Shield on the Wall) was a milecastle of the Roman Hadrian's Wall, one of a series of small fortlets built at intervals of approximately one Roman mile along the length of the UNESCO World Heritage Site in northern England.
Its remains exist as clearly visible earthworks, with the exception of part of the north gate and wall, and a fragment of the south gate, which are exposed. Exposed parts survive to a maximum height of 1.2 metres (3 ft 11 in) (north wall). The remains are located a few metres to the north of the B6318 Military Road.
Milecastle 33 was a long-axis milecastle with Type II gateways. Such milecastles were thought to have been constructed by the legio XX Valeria Victrix who were based in Deva Victrix (Chester). The external dimensions of the milecastle are 78 feet (24 m) by 68 feet (21 m), and the large, monolithic threshold installed is of the same type installed in milecastles 13, 17, and 53.
Remains of the north gateway
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 33 are known as Turret 33A and Turret 33B.
Located in 1920, nothing now remains of Turret 33A, due to extensive stone robbing. Its position was stated by Eric Birley in 1961 as "150 yds. east of the twenty-seventh milestone at the bridge crossing the Coesike".
Location on Ordnance Survey 1:25 000 map: 55°01′48″N 2°16′24″W / 55.030132°N 2.273380°W
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