Digging for Britain – Cerne Abbas

Introduction

In a recent instalment of Digging for Britain, Alice Roberts stirred the archaeological debate by asserting that the Dorset Chalk Giant at Cerne Abbas had Saxon origins rather than prehistoric roots. This added a layer of intrigue, especially from a landscape archaeology perspective. At first glance, the giant’s features appear to echo a much earlier connection, reminiscent of other chalk figures found elsewhere in Britain, where their placement within the landscape suggests a deeper, functional context.

Curiosity led to a closer look at the methods used to date this iconic figure, and the findings raise several important questions. While the programme presents a clear and confident conclusion, a deeper inspection reveals fundamental issues and omissions that call into question its reliability. This is not just about one site but about broader methodological problems in archaeology, particularly the uncritical acceptance of dating approaches that underpin many historical assumptions.

Small trenches for dating evidence

The primary technique involved excavating four small trenches and penetrating approximately 1 m into the topsoil to extract samples. The underlying assumption is that the surface beneath the chalk line represents the original ground level and therefore provides the latest possible date for the figure’s creation. While the theory itself is not unreasonable, the reliance on just four sampling points raises serious concerns about the representativeness of the results.

To fully support such a method, variations across the entire area beneath the figure would need to be taken into account. Limited sampling introduces the risk of missing key variations in the soil and sediment, which could significantly alter the dating outcome. Scientific investigation depends on comprehensive data, and without it, conclusions remain open to question.

 (Digging for Britain - Cerne Abbas)
Snail used to date the chalk figuare

In addition, the programme does not fully explore alternative interpretations or the potential impact of environmental processes on the site. This becomes particularly important when considering evidence from other studies, in which larger datasets have shown a wide range of dates from similar contexts. In one such case, forty-two samples produced dates ranging from the ninth millennium BCE through to the historic period, yet only a subset was used to support the final interpretation. This raises an obvious question about the selection and exclusion of data.

The reliance on a very small number of samples for OSL dating introduces a substantial margin of uncertainty. Across a large area such as this, variation is expected. With such limited data, the resulting data range cannot be considered definitive. The methodology, including how samples are collected and interpreted, does not meet the level of precision expected in modern scientific analysis.

There is also a fundamental geological factor that appears to have been overlooked. The site sits on a steep slope, where soil creep is an ongoing process. Even at a conservative rate, soil can move approximately one metre over a thousand years. This means that materials such as snails and sediments beneath the figure are not necessarily in their original position. Over long periods, they can be displaced downslope, disconnecting them from the original context to which they were dated.

The physical construction of the figure itself also raises questions. The current form sits within topsoil rather than being cut directly into the underlying chalk bedrock. From a practical perspective, a prehistoric construction would be more logically cut into solid chalk to ensure durability and reduce maintenance needs. The fact that the figure requires ongoing upkeep suggests a different history, potentially involving phases of covering and reworking.

 (Digging for Britain - Cerne Abbas)

Historical accounts suggest that subsequent activity may have altered or preserved the figure, raising the possibility that what is visible today is not the original construction. This opens the question of whether an earlier figure existed beneath the current one, potentially modified or replaced at a later date.

The landscape context adds further complexity. The figure is positioned at the edge of a range of hills rather than at its highest point, and its full form is clearly visible only from elevated viewpoints. This challenges the idea of it functioning as a simple ground-level marker and instead suggests that its placement may relate to a broader landscape system that is no longer immediately visible.

 (Digging for Britain - Cerne Abbas)

When all of these factors are considered together, the conclusion presented in the programme appears far less certain than initially suggested. The evidence does not point to a simple, single-phase construction, but rather to a more complex history influenced by geological processes, environmental change, and possible later modification.

Archaeological interpretation must remain grounded in robust, testable methods. When conclusions rely on limited data, untested assumptions, or incomplete consideration of environmental factors, they risk presenting certainty where uncertainty remains.

 (Digging for Britain - Cerne Abbas)
The current Figuare sits on top of the soil with broken chalk that needs constant maintenance

The Dorset Chalk Giant is not a straightforward case. It is a reminder that understanding the past requires not just data, but careful evaluation of how that data is gathered, interpreted, and applied.

The next stage of analysis will examine the wider landscape using LiDAR data, with the aim of reconstructing how this site functioned in a prehistoric environment and what it may originally have represented.

Digging for Britain - Cerne Abbas
The Giant is to the far right of the Hill Range and near the bottom – why not at the top of the middle if it’s a marker?

Part 2

Now, in this second part, our focus shifts to the professionalism of archaeologists involved in such endeavours and, by extension, the broader state of the archaeological profession in the 21st century. A critical lens is turned towards the National Trust’s excavation efforts, particularly the four trenches dedicated to OSL dating. Despite the extensive timeframe of over two years for this undertaking, the conspicuous absence of an official report raises concerns about transparency and the ability of other knowledgeable individuals to conduct scrutiny. This delay in producing and sharing findings with the wider community calls into question the efficiency and accessibility of archaeological information.

The quality of documentation further comes into question, as hand-drawn cross-sections, seemingly rushed and lacking the meticulous detail expected in rigorous scientific practices, were presented. This not only reveals an apparent ‘back of an envelope’ approach but also underscores a profound oversight by the experts. Despite having two years for scrutiny and examination, critical questions were left unexplored, a shortcoming magnified by the collaboration with the BBC for the televised program.

Digging for Britain Debunked - Cerne Abbas
Digging for Britain Debunked – Cerne Abbas

Cerne Abbas

The absence of a comprehensive and timely report, coupled with the apparent lack of attention to detail in documentation, casts doubt on the thoroughness and professionalism of the archaeological efforts surrounding Cerne Abbas. The urgency to present findings to the media and create a documentary may have compromised the meticulousness required in archaeological endeavours.

This prompts a broader reflection on the state of the archaeological profession itself. The slow pace of report publication, potential gaps in expertise, and a seeming reluctance to subject findings to rigorous scrutiny raise concerns about the discipline’s agility and accountability in contemporary times.

The deficiencies in the excavation process around Cerne Abbas become more apparent when we scrutinise the placement of the trenches and the sampling locations. The hand-drawn illustrations (which I consider ‘outdated’ in an era of affordable, widely available 3D high-definition cameras) indicate that samples were taken from the topsoil just above the chalk bedrock. However, a photograph reveals a more accurate location at the bottom of the topsoil, near the chalk bedrock, leading to the conclusion that it is Saxon.

Digging for Britain Debunked - Cerne Abbas

Poor Conclusions

A critical oversight emerges when we consider the implications of the Saxon date. If accurate, the absence of topsoil dating back thousands of years raises intriguing questions. Three plausible scenarios are explored: the deliberate removal of soil before the construction of Cerne Abbas, the initial absence of soil, or inaccuracies in OSL dating.

Option one, soil removal, implies an intention to obliterate what was originally present, raising logistical questions about the necessity for such an extensive process compared to the simplicity of laying new lines on existing chalk.

Option two speculates on the absence of soil due to something atop the bedrock, a theory we will delve into further.

Option three questions the accuracy of OSL dates, which, if proven, could cast doubt on the entire OSL science.

Option two gains credence when exploring the Post-Glacial Hypothesis, which is grounded in the notion of elevated sea levels in prehistoric times. LiDAR imagery of the site reveals a landscape shaped by Mesolithic waters, with identified natural harbours and Neolithic camps indicating the higher historical river levels. Archaeological findings, including tools and earthworks, support the hypothesis that the river running parallel to the figure was significantly higher during the Neolithic period.

Digging for Britain Debunked - Cerne Abbas
Mesolithic Coastline – Digging for Britain Debunked – Cerne Abbas

Prehistoric Landscape

This scenario accounts for approximately 7,000 years with no topsoil in the figure. Examining the bedrock reveals signs of extensive water weathering, consistent with chalk erosion over thousands of years. The excavation report and photographs reveal broken chalk at the base of the topsoil, indicating water-induced erosion and redeposition. The darkened appearance, a result of drying after being broken and re-laid on top, mirrors the common impact of water on solid chalk.

Digging for Britain Debunked - Cerne Abbas
Digging for Britain Debunked – Cerne Abbas

Further evidence points to Post-Glacial Flooding and a Neolithic origin of the figure, which strategically marks the entrance to the harbour. LiDAR maps suggest a man balancing a load on his shoulders or head, potentially representing a trading centre surrounded by quarries and mining pits.

Digging for Britain Debunked - Cerne Abbas
Lidar showing the deep chalk cuttings – Digging for Britain Debunked – Cerne Abbas
Original Cerne Abbas figure according to AI – Digging for Britain Debunked – Cerne Abbas

The intricacies of Cerne Abbas, when viewed through the lens of geological processes and archaeological evidence, unfold a narrative of ancient landscapes shaped by water, a figure emerging from millennia of erosion, and a Neolithic trading hub leaving its mark on the chalky canvas of history.

Long Man of Wilmington

NB. The findings at The Long Man of Wilmington by Prof. Martin Bell show very similar findings and geology as Cerne Abbas –

“Our method was to machine cut a trench at the base of the slope to look at the sediment sequence, then carefully hand excavate an adjoining strip, recording in three dimensions the positions of all artefacts, no matter how modern, in order to date each layer.

At the base of our trench, there were chalk meltwater muds from a time of rapid physical weathering at the end of the last Ice Age. Above these were bowl-shaped features, perhaps tree-throw pits, because they contained land snails from woodland habitats, indicating that this part of the slope had been wooded earlier in the Postglacial. They also contained some flint flakes, so they could be archaeological features.

Over this was a buried soil. Ed Rhodes, formerly of the Research Laboratory for Archaeology at Oxford, now of the Australian National University, has used OSL to date this soil to the mid-2nd millennium BC. The snails show that by this time, the landscape was open. Later in the Bronze Age, the soil was buried by more soil derived from cultivation at the base of the slope. Snails show that the escarpment above was grassland. Many sites on the South Downs show evidence for quite extensive Bronze Age soil erosion. Bronze Age and Neolithic pottery and flints from the basal soil and the colluvium indicate that a settlement was nearby.”

They called the broken chalk we saw in these excavations ‘chalk meltwater muds’, and he is correct, but this kind of deposit can only be produced by thousands of years of water erosion, not a couple of hundred, and his OSL dates confirm this, as just above this level is an OSL date of 2,000 BCE. We have 8,000 years of topsoil missing as the site, like Carne Abbass, was covered with river water, creating another natural harbour – and would you believe it – it also has a Neolithic.

PODCAST

Author’s Biography

Robert John Langdon, a polymathic luminary, emerges as a writer, historian, and eminent specialist in LiDAR Landscape Archaeology.

His intellectual voyage has been interwoven with stints as an astute scrutineer in government and grand corporate bastions, a tapestry spanning British Telecommunications, Cable and Wireless, British Gas, and the esteemed University of London.

A decade hence, Robert’s transition into retirement unfurled a chapter of insatiable curiosity. This phase saw him immerse himself in Politics, Archaeology, Philosophy, and the enigmatic realm of Quantum Mechanics. His academic odyssey traversed the venerable corridors of knowledge hubs such as the Museum of London, University College London, Birkbeck College, The City Literature Institute, and Chichester University.

In the symphony of his life, Robert is a custodian of three progeny and a pair of cherished grandchildren. His sanctuary lies ensconced in the embrace of West Wales, where he inhabits an isolated cottage, its windows framing a vista of the boundless sea – a retreat from the scrutinising gaze of Her Majesty’s Revenue and Customs, an amiable clandestinity in the lap of nature.

Exploring Prehistoric Britain: A Journey Through Time

My blog delves into the fascinating mysteries of prehistoric Britain, challenging conventional narratives and offering fresh perspectives grounded in cutting-edge research, particularly LiDAR technology. I invite you to explore some key areas of my research. For example, the Wansdyke, often cited as a defensive structure, is re-examined in light of new evidence. I’ve presented my findings in my blog post Wansdyke: A British Frontier Wall – ‘Debunked’, and a Wansdyke LiDAR Flyover video further visualises my conclusions.

My work also often challenges established archaeological dogma. I argue that many sites, such as Hambledon Hill, commonly identified as Iron Age hillforts, are not what they seem. My posts Lidar Investigation Hambledon Hill – NOT an ‘Iron Age Fort’ and Unmasking the “Iron Age Hillfort” Myth explore these ideas in detail and offer an alternative view. Similarly, sites like Cissbury Ring and White Sheet Camp receive re-evaluations based on LiDAR analysis in my posts “Lidar Investigation Cissbury Ring through time” and “Lidar Investigation White Sheet Camp,“ revealing fascinating insights into their true purpose. I have also examined South Cadbury Castle, often linked to the mythical Camelot56.

My research also extends to ancient water management, including the role of canals and other linear earthworks. I have discussed the true origins of Car Dyke in multiple posts, including Car Dyke – ABC News Podcast and Lidar Investigation Car Dyke – North Section, which suggest a Mesolithic origin 2357. I also explore the misidentification of Roman aqueducts, as seen in my posts on the Great Chesters (Roman) Aqueduct. My research has also been greatly informed by my post-glacial flooding hypothesis, which has helped explain landscape transformations over time. I have discussed this hypothesis in several posts, including AI now supports my Post-Glacial Flooding Hypothesis and Exploring Britain’s Flooded Past: A Personal Journey

Finally, my blog also investigates prehistoric burial practices, as seen in Prehistoric Burial Practices of Britain and explores the mystery of Pillow Mounds, often mistaken for medieval rabbit warrens, but with a potential link to Bronze Age cremation in my posts: Pillow Mounds: A Bronze Age Legacy of Cremation? and The Mystery of Pillow Mounds: Are They Really Medieval Rabbit Warrens?. My research also includes astronomical insights into ancient sites, for example, in Rediscovering the Winter Solstice: The Original Winter Festival. I also review new information about the construction of Stonehenge in The Stonehenge Enigma.

Further Reading

For those interested in British Prehistory, visit www.prehistoric-britain.co.uk, a comprehensive resource featuring an extensive collection of archaeology articles, modern LiDAR investigations, and groundbreaking research. The site also includes insights and excerpts from the acclaimed Robert John Langdon Trilogy, a series of books that explore Britain during the Prehistoric period. Titles in the trilogy include The Stonehenge Enigma, Dawn of the Lost Civilisation, and The Post-Glacial Flooding Hypothesis, which offer compelling evidence of ancient landscapes shaped by post-glacial flooding.

To further explore these topics, Robert John Langdon has developed a dedicated YouTube channel featuring over 100 video documentaries and investigations that complement the trilogy. Notable discoveries and studies showcased on the channel include 13 Things that Don’t Make Sense in History and the revelation of Silbury Avenue – The Lost Stone Avenue, a rediscovered prehistoric feature at Avebury, Wiltshire.

In addition to his main works, Langdon has released a series of shorter, accessible publications, ideal for readers delving into specific topics. These include:

For active discussions and updates on the trilogy’s findings and recent LiDAR investigations, join our vibrant community on Facebook. Engage with like-minded enthusiasts by leaving a message or contributing to debates in our Facebook Group.

Whether through the books, the website, or interactive videos, we aim to provide a deeper understanding of Britain’s fascinating prehistoric past. We encourage you to explore these resources and uncover the mysteries of ancient landscapes through the lens of modern archaeology.

For more information, including chapter extracts and related publications, visit the Robert John Langdon Author Page. Dive into works such as The Stonehenge Enigma or Dawn of the Lost Civilisation, and explore cutting-edge theories that challenge traditional historical narratives.

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Mesolithic River Avon

Rivers were higher in the past – Now UPDATED here: https://prehistoric-britain.co.uk/case-study-river-avon

At the outset, the clay-with-flints, a vestige of ancient weathering and erosion, stands as a testament to the relentless forces of nature that sculpted the landscape. Born from the remnants of Palaeogene sediments and the dissolution of chalk, these deposits serve as silent witnesses to the Pleistocene’s cold embrace. Their presence on the hilltop flats signifies a chronological anchor, predating the rhythmic succession of river terraces that stitch the valley’s quilt. (The Mesolithic River Avon)

Rivers were higher in the past (The Mesolithic River Avon)

As one descends the slopes, a mosaic of older head deposits unfolds, their genesis tied to the ancient processes of solifluction and solution. These sediments, bound to the clay-with-flint, narrate a tale of gradual descent and transformation, shaping the valley’s upper reaches with a subtle, yet profound, hand.

Further down the valley, the narrative evolves with the introduction of head gravel, gravelly head, and head deposits. These characters in the valley’s story are borne of fluvial transport, hill wash, hill creep, and solifluction—agents of change that have, over millennia, contributed to the valley’s sculptural form. The river terraces, numbering fourteen, ascend like steps from the valley floor, each a plateau from which to view the passage of time. The highest terraces, perched up to 100 meters above the valley, offer a broad vista extending 12 kilometers across, while the lower terraces, more intimate in their proximity to the present-day river, mark the recent chapters of geological history.

The consistency of thickness across these terraces speaks to a dynamic equilibrium of erosion and deposition, influenced by sediment overloading and tributary contributions. This interplay suggests a complex narrative of landscape evolution, one not solely dictated by the simplistic rhythm of Marine Isotope Stage cycles but enriched by a multifaceted process of lateral erosion and sediment redeposition.

Amidst this discussion of terraces and quaternary deposits, the narrative briefly diverges to contemplate the pre-Quaternary geology, where terraces from the River Avon linger in the Hampshire basin, their ages enshrouded in mystery. The challenges of dating these terraces, and by extension, understanding the full scope of the valley’s geological history, are underscored by recent findings that question traditional dating methods. Such inquiries not only deepen the mystery but also invite a reevaluation of our understanding of the Earth’s past.

Thus, we are reminded that the study of the Avon valley’s quaternary deposits is not merely an academic exercise but a profound exploration of the human quest for knowledge and understanding. It is a journey that connects us to the very essence of the natural world, revealing the intricate interplay of forces that have shaped not only the valley but also the broader tapestry of Earth’s geological history. (The Mesolithic River Avon)

Figure 5 - OSL Results Avon River (The Mesolithic River Avon)
Figure 5 – OSL Results Avon River
(The Mesolithic River Avon)

The intriguing findings presented in the diagrams regarding Optically Stimulated Luminescence (OSL) dating within the Avon valley unearth a complex narrative of sediment deposition and geological processes that challenges traditional understandings. The OSL results, as depicted in Figure 5, illuminate the temporal relationship between terrace formations and Marine Isotope Stages (MIS), while Figure 6, based on a three-dimensional model constructed from borehole data, offers a visual cross-section of the valley’s superficial geology.

The OSL ages for terraces T10 through T7, indicating deposition during or before MIS10/9, including the Last Glacial Maximum (LGM), suggest a timeline that not only aligns with but also refines previously established chronological frameworks. This refinement has significant implications for interpreting the archaeological record associated with Terrace T7 and recalibrating regional uplift and incision rates, which are crucial for understanding landscape evolution over geological timescales.

However, the apparent inconsistencies in the OSL dating results, particularly the dating of Terrace T7 before Terrace T10 and the identification of a Loess Terrace laid during the LGM, introduce a paradox into the sedimentary record. These anomalies challenge the linear progression implied by the terrace hypothesis that has guided interpretations of the valley’s geological history.

The highest terrace, T10, positioned at 102 meters above ordnance datum (OD) as illustrated in Figure 6, spans an unexpectedly broad temporal range of over 200,000 years, according to OSL dating. This finding disrupts the presumed chronological order, especially when juxtaposed with the dating of Terrace T7 at 58 meters OD, which, perplexingly, predates T10. Additionally, the Loess Terrace, situated at 77 meters OD and undifferentiated in the terrace sequence, laid down during the LGM, along with Terrace T4, which harbors the youngest dates, further complicates the scenario.

These results hint at a more intricate story of terrace formation and sediment deposition than previously thought. The seeming randomness and inconsistencies in the dating challenge the traditional terrace hypothesis and suggest that other factors, perhaps related to climatic variations, tectonic activities, or both, played significant roles in shaping the valley’s geomorphology.

The evidence points to a dynamic and possibly non-linear process of terrace formation, where episodes of sediment deposition were influenced by a combination of environmental conditions, rather than a simple chronological succession. This complexity underscores the need for a reassessment of the methods and models used to date and interpret terrace formations, advocating for a more nuanced understanding of the interplay between geological processes and climate change over the Pleistocene.

Thus, while the OSL dating provides valuable insights into the timing of terrace deposition, it also raises critical questions about the reliability of traditional chronological frameworks and the factors driving landscape evolution in the Avon valley. These findings invite further investigation and a reevaluation of existing hypotheses, highlighting the ongoing dialogue between past and present in the quest to decipher Earth’s geological history.

Figure 6- Avon River Terrace Levels - Avon River
Figure 6- Avon River Terrace Levels – Avon River
(The Mesolithic River Avon)

The authors’ observations highlight significant discrepancies and anomalies in the OSL dates that raise questions about the method’s reliability in certain contexts, particularly when compared to other dating methods like radiocarbon dating. These discrepancies are not merely academic curiosities; they fundamentally challenge our understanding of the temporal and environmental context in which these sediment layers were deposited.

The attempt to explain the notable discrepancy in the age estimates of Terrace T4 across different locations within the Avon valley suggests that sediment reworking due to recent fluvial processes or the presence of compound terraces exhibiting different depositional behaviors might be responsible. This acknowledgment of variability within the depositional environment underscores the dynamic nature of fluvial landscapes and the complexity of accurately dating such contexts.

The variability in OSL dates for samples taken at the same soil level (e.g., GL14039, GL14041, GL14038, GL14040) further complicates the narrative. The presence of nearly contemporaneous dates within error limits, juxtaposed with the significantly different sedimentation rates observed just below the topsoil, suggests that the depositional history of the Avon valley is more nuanced than previously understood. These findings indicate that relying solely on visual stratigraphy for dating purposes can lead to inaccuracies, reinforcing the need for a multi-methodological approach to construct a reliable chronological framework.

The comparison between OSL and radiocarbon dating, as discussed in the Gaigalas (2000) study, exemplifies the potential for significant age discrepancies between different dating methods. The observation that OSL dates can be substantially older than their radiocarbon counterparts highlights the need for caution and cross-validation when interpreting chronological data, especially in contexts where sediment exposure and reworking may have occurred.

The discussion of Holocene river flooding and its impact on the dating of river terraces introduces an additional layer of complexity. Flooding events can lead to the deposition of silt and other materials that obscure the original depositional sequence, potentially leading to out-of-sequence terrace dates. This phenomenon complicates attempts to use uplift modeling or the Palaeolithic record as reliable chronological markers, as evidenced by the discrepancies in age estimates for Terrace T7.

The passage concludes by emphasizing the potential of terrace deposits to provide a valuable chronological framework, albeit one that must be approached with caution. By integrating chronometric age control with detailed modeling of deposit height and thickness, researchers can gain a more nuanced understanding of the Avon valley’s landscape evolution. This approach not only enhances our interpretations of past hominin landscape use but also improves the predictive modeling of Palaeolithic sites. The challenges and discrepancies encountered in OSL dating underscore the importance of adopting a holistic and critically engaged approach to understanding the geological past, one that acknowledges the inherent complexities and uncertainties of dating dynamic fluvial landscapes.

Finally, archaeologists and geologists resist the fact that the river Avon was in Stonehenge Bottom during the Mesolithic and Neolithic period.  They insist that there is no evidence in the form of Alluvium or Colluvium in sufficient quantities to support my hypothesis.  This objection has a simple solution as Julian Richard’s suggested in his book ‘The Stonehenge Environs Project’: “colluvium sediments may have been removed or thinned by the action of seasonal streams or higher water tables in the past”. 

Macklin, as we have now seen in this section has identified over one hundred Holocene river floods, twelve of which lasted hundreds of years, that would have contributed to this lack of alluvium or colluvium at Stonehenge Bottom.  Moreover, the sources of the rivers that lay this sediment over the centuries of water flow, rely on massive precipitation entering the rivers, cutting through rocks and valleys making them flow at extreme levels which create this erosion and consequential sediment. However, the source of Palaeochannel water are natural springs found locally underground and therefore would not contain the same alluvium levels as active flowing rivers – resolving this dilemma.

Model of the number of flooded rivers in Britain - River Avon
Model of the number of flooded rivers in Britain – River Avon

UPDATE

More Empirical Evidence of Post-Glacial Flooding and a Flooded Stonehenge

River Avon River Terraces

 Prehistoric Levels and Widths for the River Avon

Take a close look at this illustration. It is not speculation, it is empirical science — mapped and measured river terraces from the Avon Valley, published in Egberts (2016), Pleistocene terrace formation and the Quaternary evolution of the Hampshire Basin, Bournemouth University.

What are we looking at?

  • These are the terrace steps cut by the River Avon over multiple glacial–interglacial cycles.
  • Each “T-level” marks a former stable floodplain where the river held its height for centuries, often millennia.
  • The heights are measured in metres OD (Ordnance Datum) and tied to known quarry and pit sites (e.g. Hatchet Gate Farm, Woodgreen, Somerley, Ashley).

💧 How much bigger was the Avon?

  • Today, the river meanders with a width of just ~50 m near Salisbury.
  • At its maximum (T11), the Avon floodplain stretched ~12 km across.
  • That is ~240 times wider than the river today.

🌊 What does this mean for Stonehenge?

  • Phase 1 of Stonehenge (Car Park Postholes) sits on T9 (~90 m OD).
  • Phase 2 (ditch, Aubrey Holes, bluestones) cuts into T8 (~75 m OD).
  • The terraces show that the palaeochannel not only flooded up to the old car park, but at times overtopped the entire Stonehenge site.

📐 Why this matters:

  • Terraces are not theory — they are empirical geomorphological evidence.
  • They prove that the Avon has flooded to multiple levels, sometimes far higher than the monument itself.
  • This is not about “if” water could reach those heights — the terraces prove it already has, repeatedly, over many Ice Age cycles.

So when critics dismiss the role of high water tables or argue “the site couldn’t have been wet,” they are ignoring the most basic geological record in front of us. The terraces are the diary of the river — written in gravel, chalk, and silt — showing that water rose and fell, over and over again.

👉 The real question is not if Stonehenge was surrounded by water. It is when, and how many times it happened during its long prehistory.

More information on the River Avon can be found at: https://youtu.be/j5LJ2sGcKOA

Further Reading

For information about British Prehistory, visit www.prehistoric-britain.co.uk for the most extensive archaeology blogs and investigations collection, including modern LiDAR reports.  This site also includes extracts and articles from the Robert John Langdon Trilogy about Britain in the Prehistoric period, including titles such as The Stonehenge Enigma, Dawn of the Lost Civilisation and the ultimate proof of Post Glacial Flooding and the landscape we see today.

Robert John Langdon has also created a YouTube web channel with over 100 investigations and video documentaries to support his classic trilogy (Prehistoric Britain). He has also released a collection of strange coincidences that he calls ‘13 Things that Don’t Make Sense in History’ and his recent discovery of a lost Stone Avenue at Avebury in Wiltshire called ‘Silbury Avenue – the Lost Stone Avenue’.

Langdon has also produced a series of ‘shorts’, which are extracts from his main body of books:

The Ancient Mariners

Stonehenge Built 8300 BCE

Old Sarum

Prehistoric Rivers

Dykes ditches and Earthworks

Echoes of Atlantis

Homo Superior

For active discussions on the findings of the TRILOGY and recent LiDAR investigations that are published on our WEBSITE, you can join our and leave a message or join the debate on our Facebook Group.

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