Atkinson's Bluestone Photographs

Parchmarks at Stonehenge 2025

Historic England have made an album of aerial photos of Stonehenge following the dry weather showing the parchmarks available. Taken on 11 July 2025 by James O Davies

https://historicengland.org.uk/images-books/photos/job/2K/32639

Much to examine, and to compare with the original parchmark paper.

Banton, S. et al. (2014) ‘Parchmarks at Stonehenge, July 2013’, Antiquity, 88(341), pp. 733–739. doi:10.1017/S0003598X00050651.

Rage, Rage Against The Dying Of A Theory

In the interest of fairness I should note that Dr John has responded to the death notice for the Glacial Transport theory.  To my eyes it is a chaotic blend of ad hominems, baseless self-cited claims, and a nonsequitous conflation of quarrying with glacial transport, despite the latter’s independence from the former. http://dx.doi.org/10.13140/RG.2.2.36446.96323

To set the record straight, Dr John accuses me of asking Researchgate to tweak my papers typeface to mimic a journal—calling it a ‘cheap stunt.’ I didn’t. Whatever he perceives is mere paranoid pareidolia; I use Word’s default fonts, and Researchgate hosts PDFs as submitted, as he’s well aware.

Blow, ye scholars, and rend your learned tomes! Ye Daw and Bevins, with your quills so sharp, Spout your refutations, drown my boulder’s truth! Rumble, ye journals, with your peer-reviewed scorn! Spit, ye XRF machines, and SEM-EDS lies! I am a king of ice, a geomorph’s sage, Whose glacial theory ye dare call dead and cold!
Here I stand, with map of Preseli’s frost, The Newall Boulder’s facets, my crown of proof! No striations, say ye? Mere weathering’s tale? I laugh at thy naivety, ye lumpers blind! Forty-six rock types, by my troth, I count, Not thy scant twelve—human hands ne’er moved these stones! Ice did the labour, o’er Salisbury’s plain it swept, Yet ye, with quarrying dreams, deny my reign!
Let the storm of thy papers crack and fall, Thy Rhosyfelin quarry, a phantom’s jest! No wedges nor rails, but nature’s own art, And I, old John, shall prove it with my fist! Parker Pearson’s ghosts, abandon thy claims, Waun Mawn’s erratics mock thy dismantled throne! I’ll rant ‘gainst this tide, though the world turn deaf, For glacial glory shall rise, or I’ll curse the sod!

 

Evidence for the Glacial Transport Theory of Stonehenge

The Glacial Transport Theory posits that the bluestones (and potentially other megaliths) at Stonehenge were primarily moved from their Welsh origins to Salisbury Plain by glacial action during the Pleistocene, rather than through human effort, implying they were collected locally near Stonehenge as erratics rather than quarried, and/or collected, in Wales and transported. 

Below is a comprehensive list of key evidence types that could prove or disprove this theory (or render it likely/unlikely), based on geological, archaeological, and glaciological principles. For each, we indicate whether it supports or refutes the theory, and annotate whether such evidence has been found, with details drawn from scientific analyses.

Evidence Table

Evidence Type	Supports or Refutes Theory	Has It Been Found?	Details and Sources
Presence of bluestone glacial erratics (boulders of matching lithology) scattered across Salisbury Plain, outside the immediate Stonehenge environs	Supports (would indicate widespread glacial deposition, allowing humans to collect them locally)	No	No bluestone erratics have been identified on Salisbury Plain beyond Stonehenge itself, despite extensive surveys; this absence contradicts expected glacial dispersal patterns
Evidence of glacial deposits, sediments, or landforms (e.g., moraines, till) on or near Salisbury Plain	Supports (would confirm ice sheets reached the area, enabling transport)	No	No glacigenic sediments, depositional landforms, or glacio-tectonic structures have been found on Salisbury Plain or adjacent areas east of north Somerset, inconsistent with glacial incursion. River gravels in nearby valleys (e.g., Wylye, Nadder, Avon) also lack glacially derived materials
Glacial striations, faceting, or subglacial microwear on bluestones (e.g., scratches, gouges from ice pressure)	Supports (diagnostic of glacial modification during transport)	Disputed, but predominantly no	Some proponents claim faint striations on artefacts like the Newall Boulder indicate subglacial features, but recent petrographic, SEM-EDS, and XRF analyses show these are likely natural slickensides or fault-related, not glacial; no definitive glacial striations found on bluestones overall
Geological or palaeoclimatic evidence that ice sheets extended to Salisbury Plain during relevant Pleistocene periods (e.g., Anglian or Wolstonian glaciations)	Supports (establishes feasibility of ice reaching the site)	No	Ice flow models and stratigraphy show glaciers did not extend east of the Somerset lowlands or south of the Vale of Moreton; topographic barriers (e.g., Mendips) and lack of evidence in southern England contradict this
An erratic dispersal train (trail of bluestone fragments) between Preseli Hills and Salisbury Plain	Supports (consistent with glacial dilution and deposition patterns)	No	No continuous train of erratics exists across southern England; dispersal fans (e.g., spotted dolerites) stop short and do not align with Stonehenge. Isolated finds (e.g., Gower coast boulder) are not on the direct path
Absence of Neolithic quarrying sites or extraction evidence in the Preseli Hills source areas	Supports (suggests stones were natural erratics, not human-quarried)	No	Quarries identified at Carn Goedog (spotted dolerite source) and Craig Rhos-y-felin (rhyolite source), with platforms, trackways, and tools indicating extraction
Evidence of quarrying tools, methods, or debitage (waste flakes) at Welsh sites matching Stonehenge stones	Refutes (indicates human extraction and transport from origin)	Yes	Stone wedges, hammer stones, loading platforms, and in-situ tools found at quarries; Newall Boulder identified as rhyolite debitage from a broken monolith (e.g., Stone 32d), showing human shaping
Dating of quarrying activity aligning with Stonehenge's construction phases (ca. 3000–2500 BC)	Refutes (links extraction to human timeline, not ancient glaciation)	Yes	Charcoal and platform dates from quarries yield ca. 3000 BC, matching Stonehenge's bluestone phase; chlorine-36 dating on a bluestone suggests exposure ca. 14,000 years BP, consistent with post-glacial human quarrying
Geochemical and petrographic matching of Stonehenge bluestones to specific Welsh quarries (without glacial intermediaries)	Refutes (supports direct human sourcing from known sites)	Yes	Bluestones match Preseli outcrops (e.g., Carn Goedog for dolerite, Craig Rhos-y-felin for rhyolite); Newall Boulder provenance confirmed as Craig Rhos-y-felin via XRF and SEM-EDS
Evidence of human transport routes or capabilities (e.g., parallels in other Neolithic sites)	Refutes (demonstrates feasibility of human movement over 200+ km)	Yes	Archaeological parallels exist for long-distance megalith transport; proposed routes via Bristol Channel or overland, with evidence like Waun Mawn circle suggesting disassembly and relocation

Conclusion

This evidence collectively makes the Glacial Transport Theory unlikely, as the preponderance (e.g., quarrying sites, absence of erratics/deposits) supports human transport. Proponents argue glaciers could move such boulders based on general capabilities, but lack site-specific proof. Recent studies have further refuted key claims, such as the Newall Boulder's glacial origin 

References

1. 1. Kellaway, G. A. (1971). Glaciation and the stones of Stonehenge. Nature, 233(5314), 30–35. https://doi.org/10.1038/233030a0
   2. Thorpe, R.S. et al. (1991) ‘The Geological Sources and Transport of the Bluestones of Stonehenge, Wiltshire, UK’, Proceedings of the Prehistoric Society, 57(2), pp. 103–157. http://dx.doi.org/10.1017/S0079497X00004527 
   3. Williams-Thorpe, O., Jones, M. C., Potts, P. J., & Webb, P. C. (2006). Preseli dolerite bluestones: axe-heads, Stonehenge monoliths, and outcrop sources. Oxford Journal of Archaeology, 25(1), 29–46. archaeologydataservice.ac.uk
   4. Green, C. P. (1997). Stonehenge: Geology and prehistory. Proceedings of the Geologists’ Association, 108(1), 1–10. https://doi.org/10.1016/S0016-7878(97)80001-6.
   5. Clark, C.D., Hughes, A.L., Greenwood, S.L. et al.  (2012) Pattern and timing of retreat of the last British-Irish Ice Sheet. Quaternary Science Reviews, 44. 112 - 146. ISSN 1873-457X https://doi.org/10.1016/j.quascirev.2010.07.019
   6. Gibson, S.M. and Gibbard, P.L. (2024), Late Middle Pleistocene Wolstonian Stage (MIS 6) glaciation in lowland Britain and its North Sea regional equivalents – a review. Boreas, 53: 543-561. https://doi.org/10.1111/bor.12674
   7. Gibbard, P.L. and Clark, C.D. (2011) ‘Pleistocene Glaciation Limits in Great Britain’, in Ehlers, J., Gibbard, P.L. and Hughes, P.D. (eds.) Developments in Quaternary Sciences. Volume 15. Amsterdam: Elsevier, pp. 75–93. ISBN 9780444534477 https://doi.org/10.1016/B978-0-444-53447-7.00007-6.
   8. Ixer, R. A., & Turner, P. (2004). A detailed re-examination of the petrography of the Altar Stone. Wilts Archaeological Magazine, 97, 1–9.
   9. Bevins, R. E., et al. (2025). The enigmatic ‘Newall boulder’ excavated at Stonehenge in 1924: New data and correcting the record. Journal of Archaeological Science: Reports, 66, 105303. https://doi.org/10.1016/j.jasrep.2025.105303.
   10. Bowen, D. Q. (1999). A revised correlation of Quaternary deposits in the British Isles. Geological Society, London, Special Report, 23.
   11. John, B. S. (2008). The Bluestone Enigma. Greencroft Books.
   12. Pearson, M.P. et al.(2015) ‘Craig Rhos-y-felin: a Welsh bluestone megalith quarry for Stonehenge’, Antiquity, 89(348), pp. 1331–1352. https://doi.org/10.15184/aqy.2015.177.
   13. Pearson, M.P. et al. (2019) ‘Megalith quarries for Stonehenge’s bluestones’, Antiquity, 93(367), pp. 45–62. https://doi.org/10.15184/aqy.2018.111.
   14. Ixer, R.A., Bevins, R.E., 2017. The bluestones of Stonehenge. Geology Today 33, 180-184.
   15. Ixer, R.A., Turner, P., Molyneux, S., Bevins, R.E., 2017. The petrography, geological age and distribution of the Lower Palaeozoic Sandstone debitage from the Stonehenge Landscape. Wiltshire Archaeology and Natural History Magazine 110, 1-16.
   16. Pearson, M.P. et al. (2021) ‘The original Stonehenge? A dismantled stone circle in the Preseli Hills of west Wales’, Antiquity, 95(379), pp. 85–103. https://doi.org/10.15184/aqy.2020.239.
   17. Bevins, R.E., Pearce, N.J.G., Ixer, R.A., Scourse, J.D., Daw, T., Parker Pearson, M., Pitts, M., Field, D., Pirrie, D., Saunders, I., Power, M., 2025. The enigmatic ‘Newall boulder’ excavated at Stonehenge in 1924: New data and correcting the record. Journal of Archaeological Science: Reports 66 https://doi.org/10.1016/j.jasrep.2025.105303
   18. Bevins, R. E., et al. (2012). Provenancing the rhyolitic and dacitic components of the Stonehenge bluestones. Journal of Archaeological Science, 39(4), 1005–1019. https://doi.org/10.1016/j.jas.2011.11.020.
   19. Ixer, R.A. & Bevins, R.E. (2017). The bluestones of Stonehenge. Geology Today. 33. 180-184. https://doi.org/10.1111/gto.12198.
   20. Darvill, T. and Wainwright, G. (2009). Stonehenge excavations 2008. Antiquaries Journal, 89 (1), 1-19.
   21. Parker Pearson, M. (2021). Stonehenge: Exploring the greatest Stone Age mystery. Simon & Schuster.
   22. John, B. S. (2018). The Stonehenge bluestones. Greencroft Books.
   
   

A tale of two boulders

Comparative Analysis of the "Brian John Boulder" at Craig Rhos-y-felin and the "Newall Boulder" from Stonehenge: Implications for the Origins and Transport of the Bluestones
- a paper - DOI: 10.13140/RG.2.2.28445.01769

The shape and surface of a boulder tells its story. The "Brian John Boulder" (left) was found in-situ at Craig Rhos-y-felin, the "Newall Boulder" (right) at Stonehenge.

"The comparison between the “Brian John Boulder” at Craig Rhos-y-felin and the “Newall Boulder” from Stonehenge reveals that both exhibit distinctive bullet-like morphologies shaped by foliation, along with comparable surface abrasion and weathering features. These characteristics show no evidence of long-distance glacial transport and are more convincingly explained by in situ weathering at the source, followed by deliberate Neolithic extraction and movement. The combined geological and archaeological evidence strongly supports human agency in the sourcing and transport of Stonehenge’s bluestones. Crucially, if the Newall Boulder had been transported over 200 km by glacial action, it would not so closely resemble clasts still in place at Craig Rhos-y-felin."

The Brian John Boulder

The Brian John Boulder: Picture Dr Brian John

Other debris and bullet shaped clasts: Picture: Dr Brian John

 Dr Brian John brings to our attention a bullet shaped clast of Rhyolite in the debris at Craig Rhosyfelin.

At Craig Rhosyfelin (also spelt Rhos-y-felin), a rocky outcrop of Ordovician rhyolite in north Pembrokeshire, Wales, the geological context reveals a site shaped predominantly by local glacial, periglacial, and fluvioglacial actions during the Late Devensian (last glacial episode, circa 20,000–11,000 years ago). The outcrop lies within a meltwater channel incised by glacial activity, where ice sheets from the Irish Sea Glacier overrode the area, causing direct abrasion and plucking without necessitating long-distance clast movement. Features previously interpreted as indicators of far-field glacial transport—such as the bullet shape, abraded surfaces, and weathering crusts—are re-evaluated here as products of localised, in-place modification. This aligns with geomorphological critiques that emphasise natural processes over anthropogenic quarrying or extensive ice entrainment, viewing the site's chaotic boulder litter as resulting from rockface disintegration, frost shattering, and short-range meltwater reworking.

1. Overall Shape and Morphology

The clast exhibits a bullet-like morphology: elongated (approximately 50–70 cm long), tapering to a pointed "nose" at one end while broadening to a blunter base at the other. Its contours follow the inherent foliation planes of the rhyolite, with subtle ridges and depressions aligned parallel to the rock's layered structure. In the image, it appears partially embedded in the sediment, amidst a scatter of similar fragments, suggesting detachment from the nearby outcrop.

This shape arises from natural fracturing along the rhyolite's prominent millimetre-scale foliation, which creates pillar-like forms prone to breaking into tapered segments. At Craig Rhosyfelin, the outcrop's vertical joints and planar banding facilitate such breakage under periglacial conditions, where repeated freeze-thaw cycles wedge apart weaknesses, producing rounded, bullet-like tips without any need for transport. Excavations have revealed numerous such detached "bullet stones" still at the site, confirming they result from in-place disintegration rather than ice flow dynamics. Local glacial overriding may have enhanced this by plucking blocks from the bedrock, but with minimal displacement—often mere metres—into adjacent meltwater channels. The asymmetry mimics streamlined forms but reflects differential weathering: exposed ends erode more via frost action, while basal connections to bedrock preserve blunter profiles.

2. Surface Characteristics and Abrasion Features

The surface is variably textured, featuring abraded facets (flat or curved planes), faint linear scratches, grooves aligned with the long axis, and minor pits or projections tied to the rock's lithology. The light grey-whitish tone in the image highlights these under ambient light, with potential microfeatures like arcuate indentations visible on closer inspection.

These abrasion traits stem from localised glacial and periglacial erosion at the outcrop itself. As Irish Sea Ice overrode the Preseli region, basal grinding against the bedrock—laden with embedded debris—created facets and striations without moving the clast far. Grooves and scratches likely formed from in situ pressure and shear along foliation planes, amplified by freeze-thaw expansion. Post-glacial exposure has added chemical etching and minor fluvial polishing from seasonal meltwater flows in the channel, but all within a few metres of origin. Such features are ubiquitous on frost-shattered rhyolite faces, where heavy abrasion occurs naturally from rockfall and colluvial movement, negating transport-related explanations.

3. Weathering Crust and Patina Development

A whitish weathering crust, up to several millimetres thick, coats the exposed surfaces unevenly, appearing chalky and flaking in places to reveal darker underlying rock. Distribution is patchy, thicker on upward-facing areas and thinner where sediment contact has offered protection.

This crust develops through prolonged post-glacial chemical weathering in place, via hydrolysis and oxidation in a humid, periglacial climate. Rhyolite's composition—rich in feldspar, chlorite, and quartz—promotes kaolinite rind formation, whitening exposed faces over millennia. At Craig Rhosyfelin, differential patina reflects partial burial in slope deposits after initial detachment, with no evidence of pre-weathering erasure by transport. Instead, it records static exposure since the Holocene, enhanced by local acidic soils and rainfall. Geomorphological studies attribute this to in situ periglacial action, where frost heaving and solifluction minimally shift clasts while accelerating surface degradation.

4. Clastic Fragments and Associated Debitage

Surrounding the clast are angular shards, rounded cobbles, and finer gravels of similar rhyolite, some with abraded edges or conchoidal fractures, forming an unsorted matrix in the fluvioglacial sediments.

These fragments result from localised rockface comminution via frost shattering and minor meltwater reworking. Pressure fractures occur along natural joints under ice load or thermal stress, with abrasion from mutual clast contact during short-range tumbling in seasonal streams. The chaotic litter represents accumulated rockfall and quarrying debris at the crag base, overlain by Holocene colluvium, without far-travelled erratics. Striated cobbles noted in exposures indicate in-place glacial polishing, but the assemblage's poor sorting points to periglacial slope processes rather than extensive transport.

5. Broader Contextual Erosion and Landscape Integration

The clast integrates into a site marked by jointed rhyolite crags, rockfall banks, and reddish sediments in a meltwater channel, with evidence of heavy abrasion on exposed surfaces.

The landscape records overriding by thin ice sheets, causing plucking and abrasion directly on the outcrop, followed by periglacial frost wedging that detaches pillar-like blocks. Fluvioglacial deposits suggest brief, high-energy meltwater episodes moving material only metres downslope. Disputed "engineering" features (e.g., platforms) may be reinterpreted as natural ledges from foliation-controlled erosion, with radiocarbon dates supporting intermittent occupation and quarrying.

Summary Table of Characteristics

Characteristic	Description in This Clast	How It Results from In Situ Events
Bullet Shape	Elongated taper along foliation, rounded tip	Frost shattering and plucking along natural planes; minimal displacement.
Abraded Facets & Scratches	Flat planes with grooves from pressure and shear	Local glacial overriding and periglacial grinding on bedrock.
Weathering Crust	Whitish rind on exposed faces, uneven	Post-glacial chemical alteration in place, protected by burial.
Clastic Fragments	Angular shards with fractures in unsorted matrix	Rockfall comminution and short-range meltwater abrasion.
Landscape Context	Chaotic litter in meltwater channel with jointed crags	Periglacial disintegration and fluvioglacial reworking locally.

In conclusion, the apparent glacial forms of this bullet-shaped clast are the result of in situ events at Craig Rhosyfelin. Overridden by ice during the Devensian, the outcrop underwent direct abrasion, plucking, and fracturing, with subsequent periglacial weathering and minor fluvioglacial adjustment detaching and modifying the clast within metres of its origin. This interpretation dismisses long-distance ice transport, viewing the features as natural outcomes of localised glacial and post-glacial processes.

Airmen's or Airman's?

 

Airmen's Cross near Stonehenge (That's not Stonehenge behind it, but Jeremy Deller's inflatable version.)

Stonehenge Education Projects - Archaeological Desk-Based Assessment

This is just one example of the confusion at the New Visitor Centre near Stonehenge. Airmen's or Airman's?

The cross itself commemorates two Airmen, so logically Airmen's. 

It's original inscription: "TO THE MEMORY/ OF/ CAPTAIN LORAINE/ AND STAFF-SERGEANT WILSON/ WHO WHILST FLYING ON DUTY MET WITH/ A FATAL ACCIDENT NEAR THIS SPOT/ ON JULY 5TH 1912./ ERECTED BY THEIR COMRADES"

The listed status description of the cross is quite clear - Airmen's   

The official War Memorial record of it - Airmen's Cross - but quotes an additional 1996 tablet inscription as "AIRMAN'S CROSS".

The road junction is more commonly Airman's Corner on maps, though it isn't noted as such until quite recently and Airmen's has been used, especially in professional reports.

It seems that the incorrect Airman's is winning as English Heritage increasingly use it. The singular form draws much of its staying power from Ordnance Survey maps and the 1996 dedicatory tablet added to the memorial itself, which explicitly labels it "AIRMAN'S CROSS." This acts as an authoritative anchor, influencing how English Heritage describes the monument in on-site signage, guidebooks, and social media posts, but the plural lingers in scholarly and commemorative circles, ensuring the confusion endures.