Offa's Dyke is a large linear earthwork that roughly follows the border between England and Wales. The structure is named after Offa, the Anglo-Saxon king of Mercia from AD 757 until 796, who is traditionally believed to have ordered its construction. Although its precise original purpose is debated, it delineated the border between Anglian Mercia and the Welsh kingdom of Powys.
Wansdyke is a series of early medieval defensive linear earthworks in the West Country of England, consisting of a ditch and a running embankment from the ditch spoil, with the ditching facing north.
Roman roads in Britannia were initially designed for military use, created by the Roman Army during the nearly four centuries (AD 43–410) that Britannia was a province of the Roman Empire.
Badbury Rings is an Iron Age hill fort and Scheduled Monument in east Dorset, England. It was in the territory of the Durotriges. In the Roman era a temple was located immediately west of the fort, and there was a Romano-British town known as Vindocladia a short distance to the south-west.
The Car Dyke was, and to a large extent still is, an 85-mile (137 km) long ditch which runs along the western edge of the Fens in eastern England. It is generally accepted as being of Roman age and, for many centuries, to have been taken as marking the western edge of the Fens. There, the consensus begins to break down.
Devil's Dyke or Devil's Ditch is a linear earthen barrier, thought to be of Anglo-Saxon origin, in eastern Cambridgeshire and Suffolk. It is now also a 98-acre biological Site of Special Scientific Interest. It runs in an almost straight line from Woodditton south of Newmarket to Reach north-west of Newmarket. It is also a Special Area of Conservation and a Scheduled Monument.
Grim's Ditch, Grim's Dyke or Grim's Bank is a name shared by a number of prehistoric bank and ditch linear earthworks across England. They are of different dates and may have had different functions.
The A505 is an A-class road in England. It follows part of the route of the Icknield Way and the corresponding Icknield Way Path and runs from Leighton Buzzard, Bedfordshire to the A11, Cambridgeshire near Abington and Sawston. Being built in the East of England countryside, the majority of the road is flat, and some of the road is raised.
Fleam Dyke is a linear earthwork between Fulbourn and Balsham in Cambridgeshire. It is now a Scheduled Monument and a 7.8 hectare biological Site of Special Scientific Interest. It formed a boundary of the late Anglo-Saxon, pre-Norman administrative division of Flendish Hundred.
Eaton Socon Castle was a Norman fortification. It was constructed next to the River Great Ouse in what is now Eaton Socon, Cambridgeshire, England.
The Aberford Dykes are a series of archaeological monuments located around the valley of the Cock Beck, where it runs just north of the village of Aberford on the border between North and West Yorkshire, England.
Stetchworth is a small village and civil parish in East Cambridgeshire, England, 3 miles (5 km) to the south of the horse-racing centre of Newmarket and around 12 miles (19 km) east of Cambridge.
Bran Ditch or Heydon Ditch is generally assumed to be an Anglo-Saxon earthwork in southern Cambridgeshire, England.
Black Ditches is an earthwork close to the village of Cavenham of Suffolk, and part of it is a biological Site of Special Scientific Interest (SSSI). The earthwork is 4.5 miles long between the River Lark at Lackford and the Icknield Way. It is described by the Suffolk Historic Environment Record as having no direct dating evidence but "by analogy with other linear earthworks in the region it is usually assumed to be post Roman".
Chiselbury is the site of an Iron Age univallate hillfort located in Wiltshire. The hillfort is sub-circular in plan, and encloses an area of approximately 10.5 acres (460,000 sq ft). It is defined by an earthen rampart up to 3.6 metres (12 ft) in height and an external ditch, up to a maximum of 1.6 metres (5.2 ft) in depth. A gap in the southeastern side of the rampart, and a corresponding causeway across the ditch, is thought to be the original entrance and is associated with a small 'D' shaped embanked enclosure, which is apparently visible on aerial photographs. Although the enclosure has subsequently been degraded by ploughing, it is still apparent as a series of low earthworks.
Ponter's Ball Dyke is a linear earthwork located near Glastonbury in Somerset, England. It crosses, at right angles, an ancient road that continues on to the Isle of Avalon. It consists of an embankment with a ditch on the east side. It is built across the ridge of land between Glastonbury and West Pennard. Both ends of the ditch and dyke disappear into moorland, formerly swamps.
Wandlebury Hill Fort, also known as the Wandlebury Ring, is an Iron Age hillfort located on Wandlebury Hill in the Gog Magog Hills, Cambridgeshire, England, to the southeast of Cambridge. Now a country park, it was the most important of three hillforts in the downs.
A cross dyke or cross-dyke is a linear earthwork believed to be a prehistoric land boundary that usually measures between 0.2 and 1 kilometre in length. A typical cross dyke consists of one or more ditches running in parallel with one or more raised banks. Univallate cross dykes typically have a flat-bottomed ditch while the ditches of multivallate cross dykes possess a V-shaped cross-section. A defining characteristic of a cross dyke is that it cuts across the width of an upland ridge or the neck of an upland spur. Cross dykes generally occur at altitudes over 150 metres (490 ft) above mean sea level.
Beacon Hill, also known as Harting Beacon, is a hillfort on the South Downs, in the county of West Sussex in southern England. The hillfort is located in the parish of Elsted and Treyford, in Chichester District. It is a Scheduled Ancient Monument with a list entry identification number of 1015915. The hilltop enclosure is dated to the Late Bronze Age, from the 8th to 6th centuries BC. The hillfort defences were renewed during the Late Iron Age.
Deil's Dyke, Pict's Dyke or Celt's Dyke in south-west lowland Scotland is a linear earthwork that roughly follows the contours that divide upland pasture from lowland arable land, effectively acting like the head-dykes of medieval and later times although its true purpose has not been settled. The Deil's Dyke, sometimes written as 'dike', is formed from an earthen berm of rounded form that varies from 2.0-4.0m wide and a maximum of 0.7m high sometimes having a stone core. Where a fosse accompanies the bank it is usually an inconsequential 0.5m or so in width on average and around 0.4m deep, more often located on the uphill or outfield side. As a defensive structure the dyke has no obvious military value and its erratic route militates against it being a practical political boundary.
