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.

The Hadrian’s Wall – Milecastle 33 – Shield-on-the-Wall appears in our Complete Guide to Visiting Hexham!

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