Archaeology

In recent weeks, I’ve talked about using archaeology to look at landscapes, either through amassing data from different excavations or through using a museum object as a springboard to look at the bigger picture. Sometimes, though, a single feature can run for long distances, not respecting modern boundaries. Things like railways and Roman roads are good examples of things that cut across the land, more often than not starting and ending outside North Hertfordshire. Ley lines are not a good example, as they don’t exist (perhaps a subject for a future post).

There is a ditch and bank that runs across Therfield Heath for more than 1.4 km. Starting in a valley east of New Road (which runs between Baldock Road and Therfield village), it climbs the hill in a northeasterly direction before turning to a more easterly alignment at the edge of the scarp. It runs north of the barrow cemetery for 390 m before turning to the southeast, where it descends the hill towards Briary Lane and is lost in the grounds of the former Wicker Hall. Although it is undated, it is earlier than Napoleonic ploughing and some of the trackways on the heath; its relationship to the Bronze Age barrows suggests that they were already there when it was dug. In the valley bottoms, it is hidden by a layer of colluvium (soil washed downhill). All told, it is something of a mystery.

 

 

Yet more mysterious is an even longer feature, visible on aerial photographs (and Google Earth™, of course!). It runs for almost 3.5 km from near Duckpuddle Bush on New Road, north of Therfield, to just north of Hatchpen, east of the A10. Both ends of the feature simply fade out, and it was probably longer in both directions. It bears no relation to field or parish boundaries, the topography or a pre-modern field system visible on Lidar. Along its course, it crosses five low ridges and the slight valleys between them, on the southern edge of a dry valley that runs east to join the northeast flowing stream in Wardington Bottom.

On the satellite view, it crosses another long line in the landscape, which shows as an angled white stripe. This is a twentieth-century pipeline of some sort, and its whiteness comes from the chalk turned up by digging the trench. The feature we are looking at isn’t one of these, as it shows as a narrow band of generally darker material, showing that the feature results from many years of silting rather than piling the excavated material back into it and perhaps that it was not dug into the underlying bedrock.

Part of it may appear in the Hertfordshire Historic Environment Record as monument number 17018. The record states: ‘A linear cropmark with a central dark toned area; logically a ditch, with lighter-toned banks on either side. It is likely to be archaeological rather than natural, perhaps a ditched track or a boundary.’ The evidence cited is a vertical aerial photograph dated 2010. It makes little sense as a track, as its runs against the grain of the landscape.

Something as long as this ditch is best described as a boundary. The aerial photographs suggest that it was little more than 2 m wide at the top, so we are not looking at something the size of Offa’s Dyke. Instead, we are probably looking at a more localised boundary, albeit on a considerable scale and part of a landscape rather than a single settlement or farmstead.

The earliest such boundaries in Britain date from the early Neolithic: the oldest dated example is on the west side of Hambledon Hill in Dorset, where radiocarbon determinations suggest that it was built about 3600 BC. Here, the ditch ran along the crest of the hill for almost 3 km, nearly as long as that in North Hertfordshire. However, excavation showed that at Hambledon Hill, the ditch runs in short segments, like the causewayed enclosure associated with it. Our local example appears to have been dug as a continuous feature.

Long boundary ditches became more widespread from the Middle Bronze Age on, after about 1500 BC. This was a time of population growth and increasing clearance of the land for agriculture, and such features are sometimes called ‘ranch boundaries’. At the same time, the development of bronze weapons since before 2000 BC had fuelled the rise of a warrior élite, the people whose families were often buried in the round barrows that dot the landscape. As the Bronze Age went on, so these families began to compete (in other words, fight) with each other for control of the land, and some of the linear boundaries built at this time may be early territorial markers.

On the opposite side of the valley from the eastern end of the ditch is Whiteley Hill, the site of a Late Bronze Age defended settlement. Jack Wilkerson and Mary Cra’ster excavated several trenches across its concentric ditches in 1957. We have met the pair on a previous #ArchaeologyTuesday, where we learnt about their work at Aldwick in Barley. At Whiteley Hill, they also excavated a pit located between the two settlement ditches and found most of two smashed storage jars. Although they dated the material to the Early Iron Age (about 850-400 BC), a reassessment of their work by Steward Bryant in the 1980s showed that the pottery is a Late Bronze Age type.

The entrance to Whiteley Hill is on the north side, facing away from the linear boundary ditch. This may be an indication that the focus of the settlement and its farmland lay more toward Burloes than in the valley to the south that the ditch follows. Trial trenching south of Reed Hall in the 2010s uncovered traces of Late Bronze Age settlement, but this is a site overlooking a valley further south, in the drainage basin of the River Quin, a tributary of the Lea. Perhaps we should be looking for Bronze Age activity on the top of the ridge west of Therfield. This is an area where several ring ditches show where earlier Bronze Age burial mounds once stood: Whiteley Hill sits among a group of three. There are also cropmarks of a cluster of ditches that look very like a settlement just below the crest on the north side of the ridge, northwest of Wimsey Hall Plantation. Could this be a farm in the land the boundary marks off?

Might we be looking at a boundary ditch later than the Bronze Age? This seems less likely for several reasons. During the Middle and Late Iron Ages, boundaries often took the form of multiple diches (like the Mile Ditches in the north end of Therfield parish, extending north into Cambridgeshire) or pit alignments (like one that runs for more than 4 km across the north of Iron Age Baldock). The way this one curves across the landscape is more typical of Bronze Age types, and its scale is too small for one of the early medieval dykes that are characteristic of south Cambridgeshire and elsewhere. The way it ignores the Roman road Ermine Street (now the A10) is also an indication that it is likely to be older.

One interesting feature of this long ditch is that its shape mirrors that of the ditch at Therfield Heath. Both have an eastern part trending about 25° south of east (a bearing of about 115°) and a roughly west-east northern section; as the western part of the long boundary has not (yet) been traced, we cannot say if this followed the same approximate bearing as the smaller. On the other hand, the westernmost part of the boundary ditch is pointing towards Thrift Hill, and it may be that this was its intended destination. Thrift Hill – which deserved to be the subject of another post – was a focus of enigmatic activity for millennia, from the Neolithic until recent centuries. As a focal point in the scarp of the hills, this would hardly be surprising.

The question is: why do the two ditches mirror each other but at different scales? Neither is forced to follow its course by the topography; indeed, they seem almost to work against it in places. Do they perhaps define a territory between them, focused on the dry valley? Here, the difficulty is that the long boundary ditch lies towards the foot of the slope on its southern side, while the shorter lies some distance beyond the crest on its northern side. It is probably best to conclude that their similar alignments are nothing more than coincidence and that while the long one is a territorial boundary, the shorter is more likely related to the barrows on Therfield Heath.

We are thus left with a lot of unanswered questions. This is not unusual in archaeology and can drive further research in the hope of finding some answers or, at least, pointers in the right direction. The recognition of this long boundary was unexpected, so we are at the start of a journey of exploration.

Written by Keith Fitzpatrick-Matthews

Much as the media likes to focus on the idea of ancient sites, individual places that can be revealed through excavation, the reality is less clear-cut. Archaeologists have long been aware that discrete ‘sites’ or ‘monuments’ are part of broader landscapes, elements of which may still exist. Sometimes, it is more helpful to think in these terms, and I have been promoting the idea of the ‘Baldock Bowl’ for more than ten years. The ‘Baldock Bowl’ is distinctive landform, part of a drainage channel that formed during the Anglian glaciation (474,000-424,000 years ago) that was later blocked to the south. When you are inside the Bowl, you have the impression of being a hollow completely surrounded by hills. This is an illusion, as it contains the springs of the River Ivel, which flows north to the River Ouse. The surrounding hills are not of any great height but the gaps through them have channelled communication for millennia.

There is an enormous density of Neolithic ‘sites’ in the Bowl, and there is little purpose in trying to define the limit of each. Instead, we can see a continuum of activity, with areas of more concentrated repetitive actions of different types and other areas that seem not to have been sufficiently well utilised to leave archaeological traces. The activity includes tracks, flint mines, burials, settlement, pits and religious monuments. The number of ‘sites’ makes it impractical to think of them as discrete units, and we have to take a holistic approach to understanding what was happening here between about 4000 and 2000 BC.

Archaeological knowledge of the area east of Letchworth Garden City, on the northwestern edge of the Baldock Bowl, began in 1957. Margaret McFarlane, then Assistant Curator of Letchworth Museum, discovered human remains in the footings for a kerb on the new Blackhorse Road. They proved to be part of a small cemetery dating from about AD 600, much later than the sites forming the Neolithic landscape. When work began in earnest on factory building in the following year, Miss McFarlane’s successor John Moss-Eccardt investigated large areas. By 1973, the final season of his work, he had investigated almost 100 ha of land. In 1988, an area to the north came up for development and is now Kristiansand Way and Talbot Way. Nine years later, from 1997 to 2000, an extension to the east end of Works Road, on the other side of the railway from these sites, revealed yet more archaeological remains. Finally, between 2010 and 2013, the Norton Community Archaeology Group investigated several sites in Hundred Acre Field, beyond the end of Blackhorse Road, uncovering further elements of the prehistoric landscape.

The earliest activity in the landscape lay close to the Ivel Springs, on the northern edge of Baldock and on the boundary of the historic parish of Norton. They formed the focus for the south-eastern end of a track at Nortonbury, although its course and destination to the north-west are unknown. Moss-Eccardt described the Nortonbury track as a cursus monument, consisting of parallel ditches and internal banks; at 7 m wide, it is much narrower than any other example of the type and is probably something else entirely. It does not seem to be a so-called ‘bank barrow’, as there is no evidence that the central area between the ditches ever held a mound. It seems instead to be a route along which people travelled to and from the springs but on a much narrower scale than the classic cursus type.

A short distance to the west, during the investigation of Norton henge in 2013, late Neolithic houses were found beneath its bank. They are horseshoe-shaped, with a windbreak on the east side of the door, the direction of the prevailing wind. Their plan is identical with those discovered by Mike Parker Pearson at Durrington Walls about five years earlier, although those at Norton do not have surviving floors. The evidence for them consists of trenches dug into the ground that once held upright overlapping timber planks. The walls they formed would probably have been covered in daub. The excavators found at least five such buildings, including one complete example. The builders of the henge bank carefully dismantled the structures before piling up the chalk, which fell into the trenches that had held the timbers. At Durrington Walls, these sorts of buildings are dated about 2600 BC, and the Stonehenge visitors’ centre boasts reconstructions of several, complete with internal fittings such as shelves.

At Norton, the houses are probably earlier than at Durrington Walls, as finds from the pre-henge activity include Peterborough ware type pottery and leaf-shaped arrowheads, Early to Middle Neolithic types. This may push the start of the activity back before 3000 BC. When the outer ditch of the henge was built, it cut through an earlier ditch, but only one short stretch could be examined, so we do not know if it was part of an enclosure containing the houses.

To the south, there are more houses at Works Road, although they consist of posthole constructions. It was challenging to produce plans of complete buildings, although at least one rectangular building is visible. The western part of the area investigated contains a mass of postholes, which show that building and rebuilding were happening here over a long time. They were effectively undatable, although associated with the same type of Middle Neolithic pottery and flintwork as at the pre-henge settlement.

At Blackhorse Road, a dense cluster of postholes in the southeastern part of a large D-shaped enclosure probably also represent many buildings. This area is complicated by a statement passed orally to the writer by a prominent academic (who shall remain nameless) that students digging there ‘invented’ postholes deliberately to confuse John Moss-Eccardt. The least said about this, the better!

What this evidence shows is that a large area across the eastern side of Letchworth Garden City saw an immense amount of activity in the centuries around 3000 BC. This early activity all seems to be domestic, apart from the ‘cursus’ at Nortonbury, where its general direction, leading away from the Ivel Springs in the opposite direction to the settlement suggests a different purpose. Given the later importance of the springs in what seem to be ritual activities, we may suspect something similar at this early date. It is also worth remarking that the ‘cursus’ is leading towards the edge of the Baldock Bowl. Did it lead people in from outside?

The henge was built in the centuries after 3000 BC, making it possibly as old as the first phase at Stonehenge (about 2960 BC). Its builders dug a ditch 60 m in diameter, 5 m across and about a metre deep, with steep sides and a flat base. The chalk taken from it was piled up inside, leaving a gap of about 3 m and creating a bank over 2 m high. Both bank and ditch had a gap facing exactly due east, towards the equinox sunrise on 21 March and 21 September. The location of the henge also meant that this line also crossed the Ivel springs. In the centre of the entranceway was a line of three irregularly shaped pits that were deliberately backfilled with clay. Inside the bank, people were setting small fires on which they burnt polished stone axes among other things, and smashed pottery.

Between about 2700 and 2500 BC, the henge saw major changes. The original bank was circular, as was the ditch outside it. This configuration is known as a ‘formative’ henge. By about 2500 BC, all newly built henges were oval, and Norton henge is the only formative type to change its shape to reflect the new fashion. The bank was reshaped, partly by cutting it back inside, opposite the entrance, and a new, shallow ditch dug inside it, while the outer ditch was left to silt up. A layer of chalk rubble was laid down as paving inside the inner ditch and through the entrance; we do not know how far this track led, but it perhaps took users down to the springs. At the centre of the henge, an oval pit contained the combined cremated remains of a new-born baby, a child and at least one adult.

Meanwhile, at Works Road, a smaller henge-like oval monument, conventionally referred to as ‘hengiform’, had a central grave. The ditch was little more than a gully, no more than 0.8 m wide and 0.45 m deep, defining an area about 10.5 m by 8,5 m, the long axis running west to east, with a gap at each end. Anna Rohnberger of the University of Reading kindly examined the skeleton that lay in a contracted position in the grave at its centre. She found that, based on the teeth, it was a child aged between 4 and 5½ years at the time of death. The backfill contained Neolithic flintwork.

Norton Henge was modified again, between about 2300 and 2000 BC. A massive post now stood close to the centre, while a low inner bank, made from material cleaned from the inner ditch, may have held a ring of smaller posts. A new pit cut through the paving in the entrance held the cremated remains of a child, while a square pit near the centre held a small collared urn. This style of pottery originated in the second half of the third millennium, and was often a container for cremated bone. At Norton, the urn was empty. Did this symbolise the ‘death’ of the henge?

At Works Road, a group of pits dates from this period. The largest cut through the southern part of the hengiform monument; it was an elongated lozenge shape, 9.5 m long, with a maximum width of 3.9 m and 2.12 m deep, perhaps extended several times. The lower fills were all chalk rubble that seems to have gone into the pit shortly after it was first dug. Their layering showed that they entered the pit from the northwest, the site of the hengiform. The chalk rubble contained struck flints and a piece of antler. Above this, there were natural silts, containing Neolithic pottery, animal bones, flints and a grinding stone with a semicircular pebble worn at one end. The grinding stone has a groove along its long axis, which the worn end of the pebble fits precisely. Nearby, another but much smaller pit contained Late Neolithic pottery, struck flint, and a second grinding stone with a cubic rubber (cushion stone), both carefully laid on the base of the pit with an antler pick placed on top of them.

What are we to make of these? Cushion stones are uncommon, but found across Europe, where they seem to be tools used in metal working. More specifically, they were used in making gold sheet, which was used to make jewellery, dress items and decorated wood and bone objects. The well-known Amesbury Archer, an exceptionally rich Early Bronze Age burial found near Stonehenge, had one in his grave. At Works Road, the stone and the grinders hint at early working of metal before the close of the third millennium BC. Several more grinding stones came from inside Norton henge. The careful placement of a cushion stone and grinder in a pit at Works Road, beneath an antler pick (perhaps even the very tool used to excavate the hole), suggests that they were an offering to the Earth.

The density of activity and the hints at wealth in the early centuries of metal working make this area in east Letchworth Garden City very important indeed for understanding the Late Neolithic/Chalcolithic transition in the region. We have more than a millennium of activity, and this account has barely scratched the surface of what was found. I haven’t mentioned the Blackhorse Road flint mines, with a puppy sacrifice at the bottom of each, containing pottery up to 1000 years old when they were filled in. I haven’t mentioned the Neolithic house on Clothall Common, surrounded by evidence for flint tool production. I haven’t mentioned the L-shaped ditch at Works Road, which replaced an earlier line of pits. Except that now I have!

Much of the activity in the area shows a concern with things underground. Dozens of enigmatic pits with no obvious practical function, the focus on the Ivel Springs, the careful and unusual burial of infants and children, perhaps hint at a belief in chthonic (underground) deities. At the same time, activities inside the henge were cut off from the landscape, perhaps hinting at a fascination with the sky and, at the very least, the sun. We should never think that Neolithic religion was focused on just one thing, such as ‘mother goddesses’. The evidence from east Letchworth Garden City shows that people were interested in earth, water, sky and, perhaps, even fire, the four elements of pre-modern Europe.

Written by Keith Fitzpatrick-Matthews

Sometimes, maps and placenames hint at past activities that are not immediately visible. Often the places are on private land but, as we’ve seen in previous Archaeology Tuesdays, aerial (or satellite) photography can reveal details. But how do we cope with woodland, such as at Tingley Wood in Pirton, just north of the B655 Hexton Road to the west of Hitchin? The name Tingley, while obscure, is first recorded in the thirteenth century as Tinele, the first element of which may derive from Old English tȳned, ‘enclosed’.

What might have been enclosed? Was it the wood (although the second element leah implies a clearing within woodland) of something already there when the wood got its name? Here, we can use a technique known as Lidar to help us see through the tree canopy to what lies on the ground surface below. Lidar has been around for more than 60 years, yet its applications in archaeology only go back twenty-five years or so. Its great advantage is that it enables us to see subtle earthworks and, remarkably, those under woodland. When first developed for satellite tracking in 1961, during the space race, it was known as Colidar (Coherent Light Detecting And Radar).

Like any such new technology, the military soon spotted that it might be useful, and the US army began using it for long-distance targeting from 1963. Around the same time, the name Lidar was first used. In 1971, astronauts in the Apollo 15 mission used it to map the moon’s surface, at it provides a very accurate altimeter (height measuring system). Altimetry is the aspect of Lidar that archaeologists find so useful.

Lidar works by sending a narrow laser beam (which can be in ultraviolet, visible or near infrared light) in pulses towards a target, measuring the time it takes to reflect. It gives a very precise measurement of the distance between the laser source and the thing being measured. Micropulse Lidar uses low energy lasers that cannot cause damage to eyesight, while high energy systems used in atmospheric studies point away from the ground into the sky. Surveys can be done from an aircraft or can be ground based; in the latter type, the scanners can be stationary or attached to moving vehicles.

From an aircraft, Lidar can give a spatial resolution – the distance between individual measurement points – of less than 30 cm. Global Position Systems record the precise location of each pulse, including the altitude of the aircraft (which is not available to sufficient resolution in everyday GPS devices). The data is returned in the form of a ‘point cloud’, a set of measurements located in three dimensions: latitude, longitude and elevation.

As raw data, point clouds are not easily ‘read’, so they have to be processed. They are excellent for producing contour maps more accurately than any human surveyor could achieve, but their most familiar applications are to make Digital Surface Models (which include buildings and trees) and Digital Terrain Models (which ‘remove’ buildings and trees).

There are numerous uses for the data produced by Lidar surveys, from agriculture (such as monitoring crop growth) through conservation (such as measuring the biomass of an area), to geology (such as identifying uplift after earthquakes) and atmospheric studies (including measuring wind speed and cloud structure). More controversially, hand-held ‘speed guns’ used by traffic control are based on Lidar, while self-driving vehicles rely on it to avoid obstacles.

Archaeological uses have become one of the most widely-publicised applications of the technique. There have been numerous press stories about the rediscovery of ‘lost’ cities and even entire civilisations beneath the jungle canopies of central America and the Amazon basin. In England and Wales, the Environment Agency has been the main force behind Lidar surveys, although other organisations (such as the Chilterns Conservation Board) also commission them.

During 2022, the Environment Agency made all its data, covering most of England and parts of Wales, available free of charge. All of North Hertfordshire can now be viewed through portals such as lidarfinder.com or the National Library of Scotland’s very useful georeferenced historic maps website (which also covers Scotland and includes a Lidar Digital Terrain Model at 50 cm resolution as one of the background layers).

Tingley Wood, in the southwestern corner of Pirton parish, just to the west of High Down, appears on maps as a simple block of woodland. Large scale maps show a track running through it from east to west, aligned roughly on High Down. Three other tracks cross it, two more-or-less straight, the third curving. Another track leads through a lobe in the southwest of the wood, while a sixth runs from the axial east-west track to the south, where it joins a track that follows the southern boundary.

The maps do not begin to hint at what the Lidar shows. The main east-west track is clear enough, including an extension at the western end, where the mapped track diverts to the south. The track south of the wood also shows, as do others outside the woodland. More significant are a series of banks and ditches around, inside and outside the wood. On the western edge of the photograph is a bank without associated ditch: this marks the line of the county boundary. The origins of Hertfordshire probably lie in the wars between King Eadweard the Elder (AD 899-924), who established fortified towns at Hertford in 912 and Bedford in 914 (and probably also Hitchin and Ashwell, about 913). The shires provided men to staff these burhs, as they were known. The boundary between Hertfordshire and Bedfordshire cut through the earlier folk territory of the Hicce, who gave their name to Hitchin. Because these new shires were artificial creations whose boundaries did not follow those that were long established, banks often mark their course, as here. The bank between Pirton and Pegsdon probably dated from the 910s.

The next thing to notice in the Lidar is a boundary bank for Tingley Wood itself. It encompasses the whole wood apart from a stretch in the south, where it is obliterated by very straight ridge-and-furrow probably created by steam ploughing in the nineteenth century, and at the north-eastern corner, where it also seems to have been ploughed away in recent centuries. A ditch follows outside the bank around the northern side of the wood, but to the southwest, the ditch is inside the bank. To the southeast, the ditch has a bank both inside and outside the wood.

The differences in the relationship between the bank and ditch hint at a complex history. Although it was usual to enclose medieval woodland, the nature of the enclosure depended on its purpose. In woodland used as part of a deer park, the ditch is always inside the bank as it makes it more difficult for the animals to jump across the boundary. For woods that were coppiced to provide timber, the ditch would be outside, as it was intended to keep animals out. We seem to have both systems here, in different parts of Tingley Wood.

Next, we seem to have subdivisions inside the woodland, marked by three banks, two with ditches, running north to south. Those with ditches both have the ditches to the west. The westernmost, which does not have a ditch, lines us with the inner bank of the southwestern lobe of the wood. Does it perhaps mark the original western edge of Tingley Wood? At the eastern end, there is a ditch with only slight traces of an internal bank running from about the middle of the southern edge up to the northeastern corner. Is this perhaps the original eastern edge of the wood? The current eastern part of Tingley Wood disrupts a pattern of ridge-and-furrow cultivation, suggesting that it has expanded over formerly arable land.

These details perhaps show the growth of the wood. If this suggestion is correct, then it was originally about 70% of its current size (11.4 ha as opposed to its current 16.0 ha). The two other north to south internal banks and ditches then divide the original woodland into three zones of unequal area. These separate parts of the wood hint at its original purpose: one of the areas would be coppices, while the other two continued to grow and provide pannage (foraging) for pigs. Perhaps the wood expanded as the demand for timber increased in the later Middle Ages, both for building work and as fuel.

There are also hollows visible both inside and outside the woodland. Most of these are irregular and surrounded by spoil. The area still had several chalk and gravel pits marked on the early Ordnance Survey maps, and this suggests an origin for those in Tingley Wood. At least one of them has partly destroyed the boundary bank and ditch, showing that this activity took place once the wood was no longer being used as a source of timber. However, one hollow to the southwest of the centre is very rectangular and may have been a saw pit, used for cutting timber when the woodland was still in use.

The story does not even end there. As well as the banks and ditches associated with boundaries and the quarry pits, there are other embanked and ditched areas that bear no relation to the woodland. All three lie south of the centre of the wood and all are disrupted by the woodland banks. The southwestern of the tree is very rectangular and lies between the proposed saw pit and the denuded original southern bank of the wood. Could this have been a penned off area used for storing wood processed in the storage pit while it seasoned?

The two other groups of ditches, only one of which is associated with banks, are more enigmatic. One overlies the other (that with banks seems to overlie the purely ditched part enclosure) and both seem to be earlier than any of the woodland management banks and ditches. What they are is unclear. The very straight edges of the ditched trapezoidal part enclosure look to be Romano-British rather than prehistoric or early medieval. Its western ditch appears to continue into the southern extension of the wood as a bank, perhaps showing that its bank within the early phase of Tingley Wood was deliberately levelled.

The bank and ditch of the northern and western edges of a perhaps polygonal (certainly not curved) enclosure overlie the southern end of the possibly Romano-British ditched enclosure. The relationship with the subdivision of the woodland seems to make this enclosure earlier, as it is cut by it and its southern and eastern edges are not visible beyond it, suggesting that they have been obliterated by the woodland. The most reasonable explanation sould be that it is intermediate in date between the underlying putatively Romano-British enclosure and earlier than the woodland. Less easy to characterise, some have identified similar enclosures as early medieval sheepcotes, areas where sheep could be penned. This high ground in the southwest of Pirton could well have been an area used for keeping sheep before being brought into arable cultivation. Other origins are, of course, possible. Might the first element of the name Tingley be not Old English týned, ‘enclosed’, but another derivative of týnan, ‘to fence or close’, perhaps an unattested but plausible *týne, ‘an enclosure’, referring to the possible sheepcote?

The Lidar results for just a small patch of land, only sixteen hectares in extent, give us a complex picture with much to digest and attempt to interpret. As a relatively new technique in archaeology, its potential is only just beginning to be tapped.