Silbury Hill
UK19970533_BMay 1997·Silbury Hill, Wiltshire·oilseed rape
Reported May 1997 in oilseed rape at Silbury Hill, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- May 1997 (month precision)
- place
- Silbury Hill
Wiltshire
England - crop
- oilseed rape
- size
- not recorded
- recorded by
- cc
- images
- 1 · 1 diagram
- writing
- nothing was written about this formation on any source
Also called
Nothing else. No other name or place string appears on any source record for this formation.
Where exactly
- coordinate
- 51.415755, -1.857405
- how it was got
- os open names
place, to within 2,000 m, from the cc record - on a map
- OpenStreetMap
No source publishes a coordinate for any formation in this archive. Every coordinate here is derived from the place name a source printed, and this page says how precise that makes it rather than rounding it away.
Images
1 image(s) on this formation's own source records. Click a tile for the full image; the bytes are fetched when you ask for them and are not stored in this page.
Diagrams (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | diagram no diagram published by cropcirclecenter (plain circle placeholder) |
cropcirclecenter.com / Bertold Zugelder | site default | 575×415 32.4 KiB image/jpeg |
image c782665e5c68 | https://www.cropcirclecenter.com/date/1997/199705.html |
Date
May 1997, to month precision. What a source records is the day a formation was found and reported.
- reported by
- cc: May 1997
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 51.415755, -1.857405 — place, ±2,000 m, by os_open_names, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Wiltshire | England | 51.415755, -1.857405 place / os_open_names |
Crop and size
- crop
- oilseed rape (cc: oilseed rape)
- diameter
- not recorded by any source
- size as written
- not recorded
Source records
What each source published, side by side. A row whose values differ across the sources is marked: the archive prints the disagreement rather than choosing a winner.
| field | cc cropcirclecenter.com |
|---|---|
| id / slug | UK19970533_B |
| name | Silbury Hill |
| location | |
| county | Wiltshire |
| country | England |
| date reported | 1997-05 |
| date precision | month |
| crop | oilseed rape |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1997/199705.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | unknown_day; no_formation_page |
| record | cc/abc2ecbc66a14… raw record view: /formation/cc/abc2ecbc66a142645fb349ae098db3b135deb993373766816a83d896b508a743 in the preview app |
Texts
no text documents in the archive for this formation
Claims about this formation
no claim was extracted from a text about this formation
Geometry
1 diagram file(s) on this page, of which 1 is a shared cropcirclecenter placeholder rather than a drawing of this formation. measured from the diagram itself, and experimental: the extractor's rotational order is right on 88.8 % of a 200-diagram hand-labelled set against a gate of 90 %, so read a number here beside the picture rather than instead of it.
| diagram | rotational symmetry | elements | rings | mirror | fill |
|---|---|---|---|---|---|
| cc c782665e (placeholder: digest) | ≈ continuous (concentric circles) | 1 | 1 | 0.996 | 1.0049 |
Experimental, and marked ≈ wherever it appears. These numbers are read off a drawing, not off the field: the extractor's rotational order agrees with a hand-labelled set on 88.8 per cent of 200 diagrams against a gate of 90 per cent, its element count is within one on 97.5 per cent, and its ring count is not calibrated at all. Nothing in the analysis tree is derived from the rotational order while that gate is unmet.
Diagrams that look like these: cc c782665e— the nearest by perceptual hash. The whole archive is browsable by shape in the shape section, and this formation's own diagrams go straight into that grid: show them in the grid.
Neighbours
In time
- previous
- Ceska Lipa 23 April 1997, Ceska Lipa
- next
- Strethall 2 May 1997, Strethall
- previous in UK
- Littlebury Greene 22 April 1997
- next in UK
- Strethall 2 May 1997
- same day
- Hoeven (Hoeven) · Barbury Castle (Barbury Castle) · Clanfield (Clanfield) · Rye (Rye) · Burderop Down (near Barbury Castle) (Burderop Down (near Barbury Castle))
- within 7 days and 25 km
- Barbury Castle 6 May 1997, 9.2 km away, 5 day(s) apart · Barbury Castle May 1997, 9.2 km away
In place
The nearest formations the archive can place.
Silbury Hill15 July 1988Silbury Hill
0 m away, 1988-07-15
Silbury Hill26 July 1988Silbury Hill
0 m away, 1988-07-26
Silbury Hill30 July 1988Silbury Hill
0 m away, 1988-07-30
Silbury Hill10 May 1989Silbury Hill
0 m away, 1989-05-10
Silbury Hill23 June 1989Silbury Hill
0 m away, 1989-06-23
Silbury Hill28 June 1989Silbury Hill
0 m away, 1989-06-28
- same county and year
- Alton Barnes 27 March 1997 · Alton Barnes 27 March 1997 · Alton Barnes 27 March 1997 · Barbury Castle 20 April 1997 · Littlebury Greene 22 April 1997 · Barbury Castle 6 May 1997 · Barbury Castle May 1997 · Winterbourne Bassett 1 June 1997 · Fox Hill 8 June 1997 · Stonehenge 9 June 1997 · Hackpen Hill 11 June 1997 · Marlborough 14 June 1997 · Rockley Down 14 June 1997 · Hinton Parva 16 June 1997 · Charlton 29 June 1997 · Bishops Waltham 9 July 1997 · Alton Barnes 11 July 1997 · Woodborough Hill 11 July 1997 · Bishops Cannings 13 July 1997 · Cley Hill 13 July 1997 and 42 more
Provenance
- entity built at
- 2026-09-11T19:20:39Z (derived from the link decisions, not from this build)
- index run ids
- none
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/UK19970533_B.json · row in index/manifest.jsonl
- input digests
- entity ffc7dbc48184 · images afe2570b1c43 · texts 4f53cda18c2b · geo eb8f968065ce