Hackpen Hill
UK20090731_A31 July 2009·Hackpen Hill, Wiltshire·wheat
Possibly the same formation as: these cross-site pairs are still open in the index review queue.
-
Winterbourne Bassett(2) (Winterbourne Bassett(2), nr Avebury)(lp, tier C, score 0.60, rule county_only, pair 1726f24b)
date 2009-07-31 vs 2009-07-31 (delta +0 d); county Wiltshire == Wiltshire; country UK (cc_id) == UK (country_field)
Reported 31 July 2009 in wheat at Hackpen Hill, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 31 July 2009 (day precision)
- place
- Hackpen Hill
Wiltshire
England - crop
- wheat
- size
- not recorded
- recorded by
- cc
- images
- 3 · 2 diagram, 1 aerial
- 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
- 51.468306, -1.815723
- 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
3 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 (2)
diagram
cropcirclecenter.com / Bertold Zugelder site default
diagram
cropcirclecenter.com / Bertold Zugelder site default
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | crop circle at Hackpen Hill | July 31 2009 | 575×415 44.1 KiB image/jpeg |
image 7abc8edf0b63 | https://www.cropcirclecenter.com/ccdata/2009/07/31/UK20090731_A.html |
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 44.1 KiB image/jpeg |
image 7abc8edf0b63 | https://www.cropcirclecenter.com/date/2009/200907.html |
Photographs (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | aerial | Olivier Morel | image credit | crop circle at Hackpen Hill | July 31 2009 | 575×415 58.1 KiB image/jpeg |
image 76b79e9b317d | https://www.cropcirclecenter.com/ccdata/2009/07/31/UK20090731_A.html |
Date
31 July 2009, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 31 July 2009
- weekday
- Friday, day 212 of the year, ISO week 31, summer
- sun and moon
- 40.3 days after the June solstice; moon waxing gibbous (75% lit), 5.5 days before the full moon (computed at 12:00 UTC; a reported date is a discovery date, not a creation date)
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 51.468306, -1.815723 — 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 | 51.468306, -1.815723 place / os_open_names |
Crop and size
- crop
- wheat (cc: wheat)
- 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 | UK20090731_A |
| name | Hackpen Hill |
| location | |
| county | Wiltshire |
| country | England |
| date reported | 2009-07-31 |
| date precision | day |
| crop | wheat |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | Olivier Morel, cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/2009/200907.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | none |
| record | cc/27cde5d788621… raw record view: /formation/cc/27cde5d788621790f7b6faed26b5f831c8643ce84e2ac5a706837fef52c96763 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
2 diagram file(s) on this page. 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 7abc8edf | ≈ 4-fold score 0.989 | 2 | 2 | 0.997 | 0.1691 |
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 7abc8edf— 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
- Ogbourne St Andrew 29 July 2009, Ogbourne St Andrew
- next
- Cervene Pecky 1 August 2009, Cervene Pecky
- previous in UK
- Ogbourne St Andrew 29 July 2009
- next in UK
- Alton Priors 2 August 2009
- same day
- Standdaarbuiten (Standdaarbuiten) · Waden Hill (Waden Hill) · Winterbourne Bassett (Winterbourne Bassett)
- within 7 days and 25 km
- Winterbourne Bassett 28 July 2009, 2.6 km away, 3 day(s) apart · Winterbourne Bassett 31 July 2009, 2.6 km away, 0 day(s) apart · Ogbourne Down 24 July 2009, 4.4 km away, 7 day(s) apart · Waden Hill 31 July 2009, 5.9 km away, 0 day(s) apart · Ogbourne St Andrew 29 July 2009, 6.3 km away, 2 day(s) apart · Silbury Hill 3 August 2009, 6.5 km away, 3 day(s) apart · Yatesbury 6 August 2009, 6.8 km away, 6 day(s) apart · Windmill Hill 6 August 2009, 9.6 km away, 6 day(s) apart · Alton Priors 25 July 2009, 12.2 km away, 6 day(s) apart · Alton Priors 2 August 2009, 12.2 km away, 2 day(s) apart
In place
The nearest formations the archive can place.
Hackpen Hill4 July 1991Hackpen Hill
0 m away, 1991-07-04
Hackpen HIll12 July 1991Hackpen HIll
0 m away, 1991-07-12 Hackpen Hill9 June 1994
Hackpen Hill
0 m away, 1994-06-09 Hackpen HillAugust 1994
Hackpen Hill
0 m away, 1994-08 Hackpen Hill11 June 1997
Hackpen Hill
0 m away, 1997-06-11
Hackpen Hill18 August 1997Hackpen Hill
0 m away, 1997-08-18
- same county and year
- Standdaarbuiten 10 July 2009 · Avebury 14 April 2009 · West Kennett 19 April 2009 · West Kennett 21 April 2009 · Avebury 23 April 2009 · Morgans Hill 24 April 2009 · Liddington Castle 25 April 2009 · Roundway Hill 29 April 2009 · East Kennett 3 May 2009 · Clatford 4 May 2009 · All Cannings 6 May 2009 · Swindon 9 May 2009 · Roundway Devizes 10 May 2009 · Barbury Castle 24 May 2009 · Bishops Cannings 24 May 2009 · Windmill Hill 24 May 2009 · Beckhampton 1 June 2009 · Milk Hill 2 June 2009 · Milk Hill 2 June 2009 · Yatesbury 3 June 2009 and 67 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
- 1726f24b2492ae4738e1651c207a0f3dbf1cb32b070eda42b4b6476d21a289c0
- entity record
- index/formations/UK20090731_A.json · row in index/manifest.jsonl
- input digests
- entity 607f94467fd7 · images 331f4aeaa3c9 · texts 4f53cda18c2b · geo 24e38a340938