Wallan
AU19911121_A21 November 1991·Wallan
Reported 21 November 1991 at Wallan. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 21 November 1991 (day precision)
- place
- Wallan
Australia - crop
- not recorded by any source
- 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
- -37.416250, 144.978590
- how it was got
- geonames
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 | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 43.6 KiB image/jpeg |
image 75d5798aa39c | https://www.cropcirclecenter.com/date/1991/199111.html |
Date
21 November 1991, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 21 November 1991
- weekday
- Thursday, day 325 of the year, ISO week 47, autumn
- sun and moon
- 30.9 days before the December solstice; moon full (100% lit), on 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
- -37.416250, 144.978590 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Victoria | Australia | -37.416250, 144.978590 place / geonames |
Crop and size
crop and size not recorded by any source
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 | AU19911121_A |
| name | Wallan |
| location | |
| county | Victoria |
| country | Australia |
| date reported | 1991-11-21 |
| date precision | day |
| crop | |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1991/199111.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/9d4420e98e797… raw record view: /formation/cc/9d4420e98e797c80de03e309713ebd051ad062389134f6d3316cf0c84bcc8590 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 75d5798a | ≈ 4-fold score 0.962 | 1 | 1 | 0.996 | 0.1622 |
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 75d5798a— 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
- West Turif November 1991, West Turif
- next
- Hoptoun December 1991, Hoptoun
- previous in AU
- West Turif November 1991
- next in AU
- Hoptoun December 1991
- same day
- no other formation is dated this day
- within 7 days and 25 km
- none, or this formation has no coordinate at place confidence or better
In place
The nearest formations the archive can place.
Melbourne18 December 1997Melbourne
44.2 km away, 1997-12-18 Clayton1966
Clayton
57.0 km away, 1966 WerribeeFebruary 1997
Werribee
60.4 km away, 1997-02
Narre Warren North8 August 1993Narre Warren North
69.7 km away, 1993-08-08
Slaty Creek Road26 December 1977Slaty Creek Road
77.4 km away, 1977-12-26 Newstead19 February 1979
Newstead
87.9 km away, 1979-02-19
- same county and year
- none
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/AU19911121_A.json · row in index/manifest.jsonl
- input digests
- entity 21295e9d8cc1 · images bee2f73ad6d6 · texts 4f53cda18c2b · geo 451a53f3a56b