Peter’s Altar Stone and mine

Map: Old Red Sandstone outcrops from the Firth of Clyde to Oban, BGS-derived, with the Clyde focus ring and the Kerrera Sandstone Formation
Two possible sources. Mine is the Firth of Clyde. Peter’s is up the coast at Oban. Neither of them is Orkney. Open in Google Earth.

Back in August I said I’d make the case for a Clyde-region Altar Stone somewhere with more room in it. This is the room.

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Different special

Google Earth map of North Yorkshire with a yellow traced outline of the Kinderscoutian sandstone around Brimham Rocks, red markers for the Devil's Arrows, Brimham Rocks and Plumpton Rocks, orange henge markers, and a blue polygon for the glacial lake reaching the Devil's Arrows.

Partisan. Say it up front. I think ice moved the big stones of Britain about and people stood them up, and I thought so before the geology got interesting. So read what follows as a man with a side and a map.

The occasion is a new paper on the Devil’s Arrows, the Millstone Grit monoliths beside the A1 at Boroughbridge, North Yorkshire. Put up something like 4,000 years ago (BC 2,000). The paper matches their zircons to Brimham Rocks, a crag 18 km west, and concludes that Bronze Age people picked that crag on purpose and dragged the stones eleven miles to a spot with no gritstone of its own. Deliberate sourcing. The word is in the title.

Google Earth map of North Yorkshire with a yellow traced outline of the Kinderscoutian sandstone around Brimham Rocks, red markers for the Devil's Arrows, Brimham Rocks and Plumpton Rocks, orange henge markers, and a blue polygon for the glacial lake reaching the Devil's Arrows.
Yellow: the Kinderscoutian sandstone the Arrows were matched to, traced from the BGS 1:50k map. Brimham Rocks is inside it, and so is a lot of other ground. Blue: the Devensian glacial lake, the Arrows on its west shore. The lake is rough, from the BGS Lexicon limits; the grit outline is raster-traced from a filtered BGS map image, not BGS vector data, and the filter picks one mapping name, so equivalent rock mapped under other names is left out. Contains British Geological Survey materials (c) UKRI 2026. Spin it round yourself in Google Earth.
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Stonehenge’s glacial till?

Artist first. Geology A level a distant third, and that was forty-five years ago. What follows was worked out in conversation with an AI, then checked against the documents. Where the checking ran out, I say so.

It is a reply to Brian John, who picked up my Glacial A303 post, and then answered a question I put to him. His answer changed what I think is worth asking for.

Map showing Trenches 511 and 512 north of the A303, west of Countess Roundabout, with Blick Mead and the River Avon to the south.
Two dots, back in the landscape. Trenches 511 and 512 lie beside the A303, west of Countess Roundabout, across the road from Blick Mead. The rings mark recorded trench locations, not trench outlines or the exact position of sample 51138. Map data © OpenStreetMap contributors.
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The glacial A303

They complained. Traffic past Stonehenge was glacial, they said, all because drivers slow down for a gawp at the stones. Little did they know. Four hundred and fifty thousand years ago the whole queue might have been sitting under an ice sheet.
Might. Hold on to that word; it does all the work in this post.

So they decided to build a tunnel. Under a UNESCO World Heritage Site. You cannot just dig; you have to check the buried history first. So they dug, and drilled, and augered, and trenched. Seven hundred times.

LiDAR relief image of rolling chalk downland with Stonehenge labelled and small coloured survey markers scattered across it
The survey area under LiDAR, gazetteer sites overlaid.
LIDAR: (c) Environment Agency copyright and/or database right 2026, Open Government Licence. Imagery (c) 2026 Google.

The picture above is the whole area under LiDAR, low sun from the north-west, every bump on Salisbury Plain standing to attention. The coloured squares are my gazetteer. Red for the primary records. Blue for trenches where the diggers wrote cold-climate words on their sheets. Grey for a line of auger holes, green for a 2023 evaluation by the visitor centre, purple for a borehole transect, orange for four drilled cores that went off to a laboratory and never came back. All of it lives in a Google Earth file you can spin round yourself. Turn the layers on and off. Fly about. It is the best free toy I have made all year.

I have read the lot. Forty-three public documents, 11,302 pages of borehole logs, trench sheets, laboratory appendices and method statements, put through a scanner with one question: ‘did anybody, anywhere along that road, record anything glacial?’ All from one road scheme, mind; Historic England’s own archive is another trawl for another day. What came back is not proof. Hints. But damn, some of them are suspicious.

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Anyone but boring old nature

A robed, long-haired Merlin raises a glowing staff towards a stone lintel slung beneath an enormous timber gantry crane, while dozens of workmen haul on ropes below and sit astride the top beam at sunset
Geoffrey of Monmouth, AD 1136. Merlin, magic and machines, not muscle.

Nobody has ever wanted the boring answer. Nine hundred years of people explaining how the stones got onto Salisbury Plain, every one of them with a better version than the last, and not one of those versions has ever been “the ice put it there.”

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Thursdays at Stonehenge, are usually strange

Skyclad witches dancing among the stones at Stonehenge by moonlight

Stonehenge has never been short of folk who reckon something unaccountable goes on… Far out there, man. Far out there.

The Devil got in first. Bought the stones off an old woman in Ireland, magicked them over by night, then chucked one at a friar who caught him at it. Hence the Friar’s Heel.

Then there’s the counting. Four hundred-odd years ago, back around Elizabeth I, it was held that nobody could count the stones twice and arrive at the same total, and that whoever managed it would come to a bad end. Nobody ever says what sort of bad end. That’s the trouble with a curse. No docket. No paperwork. Nobody to ring. No Google to query. No help’s coming. (I know that trick.)

The witches turned up considerably later. Skyclad rites at the stones are a 1950s and 60s invention, Wicca first, then the free festivals, yes, sometimes naked, but as ancient as a Ford Anglia. Hasn’t stopped anybody. Thursdays out there are usually strange.

A sha-lady after all: the Upton Lovell shaman was a woman

Bronze Age woman in a bone-fringed cloak on chalk downland at sunset, freshly built white chalk barrows on the ridge behind.
The Upton Lovell woman, as a witch photographer would. The single fringe of drilled bone points, the two hammered gold discs, the dark touchstone in her palm and the raw white chalk of the barrows behind her all come from the record.

Well, well, well. The Upton Lovell shaman, dug out of a Wiltshire barrow in the early 1800s and shown off ever since as a bearded bloke in a bone cloak, turns out to have been a woman – a shamanka. Ancient DNA, three separate bones, the same answer each time. She lived around 3,800 ya (BC 1,800), and she was buried barely 10 miles (16km) west of Stonehenge.

Derived from the Tungusic word šaman meaning “one who knows” a shamanka is a female shaman. The word combines the term “shaman” with the Russian feminine suffix “-ka.”

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Stonehenge’s stone 28

Long been fascinated by these carvings. I think this stone will be the Rosetta Stone of Stonehenge. Seen with other original markings on 59a and the back of 54. There’s definitely method in the carvers’ madness.

Stonehenge Stone 28 a sarsen on the outer ring showing the carved curves on the outer face of the stone. Rendered in a rust texture to emphasise the swirling patterns.
S28 rendered in a rust texture to emphasise the swirling patterns. Note the three notches top right.

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