Vollborg
US19871333_B1987·Vollborg
Reported 1987 at Vollborg. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 1987 (year precision)
- place
- Vollborg
United States - 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
- 46.964769, -110.603760
- how it was got
- county centroid
county, to within 120,000 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 40.2 KiB image/jpeg |
image e04d63d63d2e | https://www.cropcirclecenter.com/date/1987/1987unk.html |
Date
1987, to year precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 1987
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 46.964769, -110.603760 — county, ±120,000 m, by county_centroid, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Montana | United States | 46.964769, -110.603760 county / county_centroid |
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 | US19871333_B |
| name | Vollborg |
| location | |
| county | Montana |
| country | United States |
| date reported | 1987 |
| date precision | year |
| crop | gras |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1987/1987unk.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | unknown_month; no_formation_page |
| record | cc/c953a79809383… raw record view: /formation/cc/c953a7980938310e3ba98e16635e547a4405b5088fbb83164d2d03e97dc0e082 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 e04d63d6 | ≈ continuous (concentric circles) | 1 | 1 | 0.996 | 0.3273 |
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 e04d63d6— 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
- Froxfield 26 August 1986, Froxfield
- next
- Euramo 20 February 1987, Euramo
- previous in US
- Helena 1986
- next in US
- Middleton 27 May 1987
- same day
- Punjab (Punjab) · Piteaelven River (Piteaelven River) · UA19871333_A · Avebury Trusloe (Avebury Trusloe) · Beckhampton (Beckhampton) · Bishops Cannings (Bishops Cannings) · Chester (Chester) · Colloway Clump (Colloway Clump) · Hillmarton (Hillmarton) · UK19871333_H (Dorset) · Dahlgreen (Dahlgreen)
- 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.
this formation has no coordinate at place confidence or better, so nothing can be called near it
- 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/US19871333_B.json · row in index/manifest.jsonl
- input digests
- entity 81372d1e4897 · images a145a28b183d · texts 4f53cda18c2b · geo cc80b6847228