Mamucium occupies a low sandstone promontory at the junction of the Rivers Medlock and Irwell. The bedrock is the Triassic Sherwood Sandstone Group, a firm, well‑drained red sandstone that gave Roman engineers a stable platform for earthworks and timber palisades, while nearby river gravels supplied road‑making aggregate.
Millbarrow once stood on a low chalk spur 2 km north‑west of Avebury, just above the spring‑line where the Kennet valley opens onto the Marlborough Downs (NGR SU 0943 7221). From its east–west‑aligned crest the ground falls gently south to Windmill Hill and east into the Kennet valley, giving the mound clear sight of the Avebury monument complex, and easy access to water and pasture.
Sitting on the south‑east shoulder of Windmill Hill (grid ref. SU 086 070), 140 ft (43 m) above the Kennet valley, the Horslip long barrow commands the same chalk ridge that carries the famous Early‑Neolithic causewayed enclosure 400 m upslope.
A stretch of Roman road just 38-40 cm (15 in) below Liverpool Road in Castlefield. The trench shows the classic Roman construction sequence – a cambered rubble core surfaced with tightly packed cobbles – and runs on a north-east/south-west alignment that leaves Mamucium’s north gate and heads towards modern Salford.
← South Yorkshire Roman Rig Defensive Works The Roman Rig is a defensive dyke built to defend against attack from the south. It runs from Sheffield, past Read more Templeborough Roman Fort – Rotherham Templeborough Roman Fort occupies a commanding position on the north bank of the River Don at Rotherham (OS grid SK Read …
Derventio was an auxiliary fort, it probably housed a mounted ala or an infantry cohort. It is located immediately west of modern Adwick le Street (OS SE 553 008), astride Ermine Street (the Roman Ridge).
Templeborough Roman Fort occupies a commanding position on the north bank of the River Don at Rotherham (OS grid SK 410 916), where the Magnesian Limestone ridge drops into the floodplain. Originally constructed in timber and earth in the mid–1st century AD, it was later rebuilt in stone and occupied—possibly intermittently—until the withdrawal of Roman authority in the early 5th century AD
Great Roe Wood (often simply called “Roe Wood”) sits on the Magnesian Limestone ridge that carries the Roman Rig between Sheffield and Doncaster, just northeast of the village of Woodhouse (OS grid SK 450 920). This ridge forms a natural corridor overlooking the Don valley, with shallow soils over limestone giving way to deeper alluvial gravels in the valley bottom.
Camp Green (often called “Danes Camp”) crowns a limestone-capped knoll immediately north-east of St Michael’s Church in Hathersage (OS grid SK 234 819). Perched above the Hope Valley, it commands wide views down the River Derwent corridor and sits at the transition between the Millstone Grit plateaux to the north and the lower limestone and sandstone vale to the south
This is an oval fort with an internal area of 2.5 acres. A bank, ditch and counterscarp bank are continuous around it except on the N side where ditch and counterscarp have been destroyed.
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