Hackpen Hill
UK19990704_B4 July 1999·Hackpen Hill, Wiltshire·wheat
Possibly the same formation as: these cross-site pairs are still open in the index review queue.
-
Hackpen Hill (Hackpen Hill)(lp, tier C, score 0.75, rule adjacent_day, pair 3943ac42)
date 1999-07-04 vs 1999-07-03 (delta +1 d); name tokens shared: hackpen; county Wiltshire == Wiltshire; country UK (cc_id) == UK (country_field)
Reported 4 July 1999 in wheat at Hackpen Hill, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 4 July 1999 (day precision)
- place
- Hackpen Hill
Wiltshire
England - crop
- wheat
- size
- 406 ft (123.7 m) across
as written: 124 m | 406 ft - recorded by
- cc
- images
- 1 on the record, 5 attached · 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
- 51.468306, -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
1 image(s) on this formation's own source records, and 5 more on 5 attached record(s) below. 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 | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 67.8 KiB image/jpeg |
image 2599e022fc31 | https://www.cropcirclecenter.com/date/1999/199907.html |
Attached photographs (5)
inferred link These pictures did not come with a source record of this formation. Each one is a single-photograph archive entry whose own date and place the index matched to this formation; nothing about the formation itself comes from them. The rule, the score and the evidence are printed with each record so the link can be checked, and the credit stays with the photograph.
Date
4 July 1999, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 4 July 1999
- weekday
- Sunday, day 185 of the year, ISO week 26, summer
- sun and moon
- 12.7 days after the June solstice; moon waning gibbous (71% lit), 5.6 days after 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
- 406 ft (123.7 m)
- size as written
- 124 m | 406 ft
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 | UK19990704_B |
| name | Hackpen Hill |
| location | |
| county | Wiltshire |
| country | England |
| date reported | 1999-07-04 |
| date precision | day |
| crop | wheat |
| size | 124 m | 406 ft |
| diameter (ft) | 406 |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1999/199907.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/e449482bf92d8… raw record view: /formation/cc/e449482bf92d8a665eea92bd590082396bafe23ac0ed9957c23b0901e61a82e2 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. 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 2599e022 | ≈ 3-fold score 0.952 | 1 | 3 | 0.729 | 0.2937 |
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 2599e022— 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
- Hackpen Hill 3 July 1999, Hackpen Hill
- next
- Nové Mesto 6 July 1999, Nové Mesto
- previous in UK
- Hackpen Hill 3 July 1999
- next in UK
- Easton-in-Gordano 6 July 1999
- same day
- Ostrov (Ostrov) · Corston (Corston) · Mapledurwell (Mapledurwell) · Walla Walla (Walla Walla) · Walla Walla (Walla Walla)
- within 7 days and 25 km
- Waden Hill July 1999, 5.9 km away · Marlborough 10 July 1999, 7.9 km away, 6 day(s) apart
In place
The nearest formations the archive can place.
Hackpen Hill
0 m away, 1991-07-04
Hackpen 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 Hill
0 m away, 1997-08-18
- same county and year
- Lac Simon 23 November 1999 · Alton Barnes 20 March 1999 · Milk Hill 3 April 1999 · Marlborough 12 April 1999 · Bishops Cannings 15 April 1999 · Everleigh 19 April 1999 · Woodborough Hill 30 April 1999 · Milk Hill 2 May 1999 · Avebury Trusloe 23 May 1999 · Barbury Castle 31 May 1999 · Barbury Castle 31 May 1999 · All Cannings 11 June 1999 · Alton Barnes 11 June 1999 · Alton Barnes 11 June 1999 · Chiseldon 11 June 1999 · Figheldean 11 June 1999 · Pewsey White Horse 16 June 1999 · Avebury Trusloe 19 June 1999 · Silbury Hill 19 June 1999 · Furze Hill 20 June 1999 and 71 more
Provenance
- entity built at
- 2026-09-15T03:03:25Z (derived from the link decisions, not from this build)
- index run ids
- 20260915T030325Z-index-build
- reviews applied
- none
- open queue pairs
- 3943ac427c50ae08209abf9678f2fc25c9ba92c2254042b2d6ba1929a9c2739f
- entity record
- index/formations/UK19990704_B.json · row in index/manifest.jsonl
- input digests
- entity fa8d8d1360b9 · images 9f57dd2b5a95 · attachments d5e0b1964874 · texts 4f53cda18c2b · geo 9cb555a84465