#Alongthewallin80days - Day 58
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.
1930 - A fragment of ornamented stone with a distinct pattern of leaves is found at the North gate.
1935-6 - The milecastle is excavated, and the dimensions and remaining structure established.
1966 - English Heritage Field Investigation. The 1935-6 findings were reconfirmed.
1988 - English Heritage Field Investigation as part of the Hadrian's Wall Project. It was noted that the maximum height of surviving masonry (at the north wall) was 1.2 metres (3 ft 11 in). Other previous findings are reconfirmed