 |
| Portingbury Hills | |
|---|---|
 Portingbury Hills (Photo by Glyn Baker) | |
| Highest point | |
| Coordinates | 51°51′41″N0°13′27″E / 51.86136°N 0.2243°E |
| Geography | |
| Location | Hatfield Forest, Hatfield Broad Oak, England |
| OS grid | TL5320 |
| Topo map | OS |
Portingbury Hills (grid reference TL5320 ) or Portingbury Rings is a hill in Hatfield Forest, Hatfield Broad Oak, Essex, United Kingdom.
Archaeological excavations were carried out in 1964–1965, with recovered evidence including a small flint blade 4 cm long, animal bones, flints, and charcoal, dated to the Iron Age. [1] [2]
Radiocarbon dating of organic sediments has showed that the cutting of the ditch must have occurred prior to 395 to 205 cal BC. [3]
The earthworks at Portingbury consist of 3 features; a hill and mound connected by a zig-zag causeway formed by 2 almost parallel ditches to another rectangular enclosure measuring 30 by 21 metres (98 ft × 69 ft) surrounded by a large ditch with a suggested bank up to 11 metres (36 feet) wide. They are located in the northwest of Hatfield Forest in Beggarshall coppice. Archaeologists suggested that the initial, V-shaped, ditch surrounding the mound would have been approximately 2 metres in depth suggesting it once had earth ramparts supported by timber. Smaller banks have been noted to cross Shermore Brook to Spittlemore coppice. [4] However the earthworks are too small to be a hillfort and are not in a defensible position. [5] Moreover, the ditches are of a size more commonly found in medieval moats. The current earthworks may be the result of overbuilding over time. [6]
Traces of a larger, circular entrenchment, near Portingbury Hills, were still visible in the early 18th century. [7]
In 1975 retired geologist and researcher Christian O'Brien suggested that Portingbury Hills had a purpose in archaeoastronomy and was constructed in the Bronze Age which gave it some brief coverage in the Sunday Telegraph. O'Brien suggested that the mound was aligned astronomically with Wandlebury Hill via a series of equally spaced, hand-carved, stone monoliths forming a Loxodrome. Eleven of the original twenty-six markers are still in situ, such as the Leper Stone, with several of the other distinctive stones lying nearby. [8] O'Brien's theory met with mixed reviews from astronomers and archaeologists. [9] Glyn Daniel, Professor of Archaeology at Cambridge University dismissed the paper as "nonsense" and Alexander Thom could find nothing in it to revise the prevailing view of Wandlebury as an Iron Age fort. Archie Roy, Professor of Astronomy at Glasgow University commented that "in the absence of a more convincing explanation, this conclusion also has to be taken very seriously.” [10] [11]
Silbury Hill is a prehistoric artificial chalk mound near Avebury in the English county of Wiltshire. It is part of the Stonehenge, Avebury and Associated Sites UNESCO World Heritage Site. At 39.3 metres (129 ft) high, it is the tallest prehistoric human-made mound in Europe and one of the largest in the world; similar in volume to contemporary Egyptian pyramids.
Avebury is a Neolithic henge monument containing three stone circles, around the village of Avebury in Wiltshire, in southwest England. One of the best known prehistoric sites in Britain, it contains the largest megalithic stone circle in the world. It is both a tourist attraction and a place of religious importance to contemporary pagans.
Ambresbury Banks is the name given to the remains of an Iron Age hill fort in Epping Forest, Essex, England.
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Julliberrie's Grave, also known as The Giant's Grave or The Grave, is an unchambered long barrow located near to the village of Chilham in the south-eastern English county of Kent. Probably constructed in the fourth millennium BCE, during Britain's Early Neolithic period, today it survives only in a state of ruin.
Liddington Castle, locally called Liddington Camp, is a late Bronze Age and early Iron Age univallate hillfort in Liddington parish in the English county of Wiltshire, and a scheduled monument.
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Figsbury Ring is an 11.2 hectare biological Site of Special Scientific Interest in Wiltshire, England, notified in 1975. It is owned and managed by the National Trust.
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In archaeology, earthworks are artificial changes in land level, typically made from piles of artificially placed or sculpted rocks and soil. Earthworks can themselves be archaeological features, or they can show features beneath the surface.
The Vallum is a huge earthwork associated with Hadrian's Wall in England. Unique on any Roman frontier, it runs practically from coast to coast to the south of the wall.
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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.
Munsa is an archaeological site in Uganda, located in the south-eastern part of Bunyoro, and is commonly recognized by a rocky hill known by the locals as "Bikegete", which is enclosed within an earthworks system of ancient ditches. The site is approximately 5 kilometres (3.1 mi) north-west of Kakumiro township in Bugangaizi County, Kakumiro District. "Munsa" is a Runyoro(Lunyoro/Runyoro Edited by Nicholas Aliganyira Nkuuna) name that means "in the trenches". The architects of the earthworks are unknown, although it has been speculated that the site can be linked to the Bachwezi. There is no evidence for this, however, and it seems likely that association of Munsa with the Bachwezi or Chwezi is a recent development.
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.
Barkhale Camp is a Neolithic causewayed enclosure, an archaeological site on Bignor Hill, on the South Downs in West Sussex, England. Causewayed enclosures were built in England from shortly before 3700 BC until at least 3500 BC; they are characterized by the full or partial enclosure of an area with ditches that are interrupted by gaps, or causeways. Their purpose is not known; they may have been settlements, meeting places, or ritual sites. The Barkhale Camp enclosure was first identified in 1929, by John Ryle, and was surveyed the following year by E. Cecil Curwen, who listed it as a possible Neolithic site in a 1930 paper which was the first attempt to list all the causewayed enclosures in England.
South Weald Camp was a hillfort based in South Weald, Brentwood, Essex, England. Roughly circular in plan, the fort covered 2.8 hectares, with a suggested construction date in the late Iron Age, from the 1st century BC to the 1st century AD. The location is associated in this period with the Catuvellauni and the Trinovantes.
(excavation report)