Hadrian's Wall - Milecastle 22 - Portgate
Milecastle 22 (Portgate) was a – Milecastle of the Roman Hadrian’s Wall. Its remains exist as a low, turf covered platform just east of the Portgate roundabout (junction of the A68 and B6318). The platform is 0.5 metres (1.6 ft) on the east side, reducing to only a parch mark on the west side. – Milecastle 22 was assumed to be a long-axis – Milecastle, and had Type III gateways (only the north gateway has been identified).