Roundway Hill
UK20090429_A29 April 2009·Roundway Hill, Wiltshire·oilseed rape
Reported 29 April 2009 in oilseed rape at Roundway Hill, Wiltshire. Two archives recorded it, and they give the same date.
The record
- date
- 29 April 2009 (day precision)
- place
- Roundway Hill
Wiltshire
England - crop
- oilseed rape
- size
- 197 ft (60.0 m) across
as written: 60 m | 197 ft - recorded by
- cc lp
- images
- 7 on the record, 8 attached · 2 diagram, 1 aerial, 4 other
- writing
- nothing was written about this formation on any source
Also called
Roundway Hill, nr Devizes
Canonical name from the cropcirclecenter.com name; the rest are what the other source records print for the same formation.
Where exactly
- coordinate
- 51.368040, -1.980817
- 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
7 image(s) on this formation's own source records, and 8 more on 8 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 (2)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | crop circle at Roundway Hill | April 29 2009 | 575×415 72.9 KiB image/jpeg |
image fa352e7a9f1f | https://www.cropcirclecenter.com/ccdata/2009/04/29/UK20090429_A.html |
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 72.9 KiB image/jpeg |
image fa352e7a9f1f | https://www.cropcirclecenter.com/date/2009/200904.html |
Photographs (5)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | aerial | Lucy Pringle | image credit | crop circle at Roundway Hill | April 29 2009 | 575×415 106.5 KiB image/jpeg |
image ffbd75447510 | https://www.cropcirclecenter.com/ccdata/2009/04/29/UK20090429_A.html |
| lp | other | Lucy Pringle | page credit | Five central concentric rings round a central flattened circle with 18 swirling arcs branching out to the circular perimeter. Measures 230 feet diameter. | 524×768 132.9 KiB image/jpeg |
image 7b282798963b | https://www.cropcirclephotographs.co.uk/photos/2009/uk2009af.shtml |
| lp | other | Lucy Pringle | page credit | Five central concentric rings round a central flattened circle with 18 swirling arcs branching out to the circular perimeter. Measures 230 feet diameter. | 800×593 184.0 KiB image/jpeg |
image 43c128e9fed6 | https://www.cropcirclephotographs.co.uk/photos/2009/uk2009af.shtml |
| lp | other | Lucy Pringle | page credit | Five central concentric rings round a central flattened circle with 18 swirling arcs branching out to the circular perimeter. Measures 230 feet diameter. | 800×581 114.1 KiB image/jpeg |
image 8da1e2e4fa3b | https://www.cropcirclephotographs.co.uk/photos/2009/uk2009af.shtml |
| lp | other | Lucy Pringle | page credit | Five central concentric rings round a central flattened circle with 18 swirling arcs branching out to the circular perimeter. Measures 230 feet diameter. | 794×600 257.6 KiB image/jpeg |
image d9f090bad06b | https://www.cropcirclephotographs.co.uk/photos/2009/uk2009af.shtml |
Attached photographs (8)
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
29 April 2009, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 29 April 2009 lp: 29 April 2009
- weekday
- Wednesday, day 119 of the year, ISO week 18, spring
- sun and moon
- 40.0 days after the March equinox; moon waxing crescent (24% lit), 9.7 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
- 51.368040, -1.980817 — 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 | 51.368040, -1.980817 place / os_open_names | |||
| lp | Roundway Hill, nr Devizes | Wiltshire | United Kingdom | none |
Crop and size
- crop
- oilseed rape (cc: oilseed rape, lp: —)
- diameter
- 197 ft (60.0 m)
- size as written
- 60 m | 197 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 | lp cropcirclephotographs.co.uk |
|---|---|---|
| id / slug differs | UK20090429_A | roundway-hill-2009 |
| name | Roundway Hill | Roundway Hill |
| location | Roundway Hill, nr Devizes | |
| county | Wiltshire | Wiltshire |
| country differs | England | United Kingdom |
| date reported | 2009-04-29 | 2009-04-29 |
| date precision | day | day |
| crop | oilseed rape | |
| size | 60 m | 197 ft | |
| diameter (ft) | 197 | |
| grid reference | ||
| what3words | ||
| map link | ||
| credits differs | Lucy Pringle, cropcirclecenter.com / Bertold Zugelder | Lucy Pringle |
| source page differs | https://www.cropcirclecenter.com/date/2009/200904.html | https://www.cropcirclephotographs.co.uk/photos/2009/uk2009af.shtml |
| link to the entity | rule Bscore 0.90 decided by rule on 2026-09-15 date 2009-04-29 vs 2009-04-29 (delta +0 d); name tokens shared: roundway; alias devizes ~ roundway (seed); county Wiltshire == Wiltshire; country UK (cc_id) == UK (country_field) |
rule Bscore 0.90 decided by rule on 2026-09-15 date 2009-04-29 vs 2009-04-29 (delta +0 d); name tokens shared: roundway; alias devizes ~ roundway (seed); county Wiltshire == Wiltshire; country UK (cc_id) == UK (country_field) |
| warnings | none | none |
| record | cc/f8ed91198c4ce… raw record view: /formation/cc/f8ed91198c4cedcdb2049b0811e48ee9845c539ab72b2bc4d4d9050f8d36b90b in the preview app |
lp/c2d1764fc3ccd… raw record view: /formation/lp/c2d1764fc3ccd77505de15e15f9fb3e09df0a3af05bd58588755a616118fda17 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 fa352e7a | ≈ 18-fold score 0.953 | 6 | 7 | 0.83 | 0.5298 |
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 fa352e7a— 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
- Liddington Castle 25 April 2009, Liddington Castle
- next
- Wattenbach 1 May 2009, Wattenbach
- previous in UK
- Liddington Castle 25 April 2009
- next in UK
- East Kennett 3 May 2009
- same day
- no other formation is dated this day
- within 7 days and 25 km
- All Cannings 6 May 2009, 5.9 km away, 7 day(s) apart · Avebury 23 April 2009, 11.0 km away, 6 day(s) apart · East Kennett 3 May 2009, 11.3 km away, 4 day(s) apart · Clatford 4 May 2009, 15.5 km away, 5 day(s) apart
In place
The nearest formations the archive can place.
Roundway Devizes
0 m away, 1991-06-28
Roundway Devizes
0 m away, 1992-07-24
Roundway Devizes
0 m away, 1995-07-21
Roundway Devizes
0 m away, 1995-07-25
Roundway Devizes
0 m away, 1995-08
Roundway Devizes
0 m away, 1996-07-16
- 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 · 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 · Chiseldon 5 June 2009 and 67 more
Provenance
- entity built at
- 2026-09-15T21:14:17Z (derived from the link decisions, not from this build)
- index run ids
- 20260915T030325Z-index-build, 20260915T211417Z-index-build
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/UK20090429_A.json · row in index/manifest.jsonl
- input digests
- entity 448cac2d4cfa · images 71ddb3b49586 · attachments 1556091cb66a · texts 4f53cda18c2b · geo dbc9f5878414