cropcircles.photos the public record of crop formations, 1590–2026
view

NL20040828_A ·The 2004 season ·The Netherlands

Assen

28 August 2004·Assen·wheat·177 ft (53.9 m) across

Plate — one of 1 image on this record · 575×415 px every image →

Reported 28 August 2004 in wheat at Assen. One archive recorded it, so nothing about it can be cross-checked.

The record

date
28 August 2004 day precision
place
Assen, The Netherlands no other name or place string on any source record · name from the cropcirclecenter.com name
crop
wheat
size
177 ft (53.9 m) acrossas written: 54 m | 177 ft54 m across100 m
recorded by
cc · cropcirclecenter.com
images
1 · 1 diagram
writing
nothing was written about this formation on any source

Where exactly

5 km
coordinate
52.996670, 6.562500
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)

sitekindcreditbasiscaptionsizefilesource page
cc diagram cropcirclecenter.com / Bertold Zugelder site default 575×415
50.6 KiB image/jpeg
image c1af78003b09 https://www.cropcirclecenter.com/date/2004/200408.html

Date

28 August 2004, to day precision. What a source records is the day a formation was found and reported.

reported by
cc: 28 August 2004
weekday
Saturday, day 241 of the year, ISO week 35, summer
sun and moon
25.2 days before the September equinox; moon waxing gibbous (96% lit), 1.6 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
52.996670, 6.562500 — place, ±2,000 m, by geonames, from the cc record
on a map
OpenStreetMap
siteplacecountycountrygrid refwhat3wordsfix
ccDrentheThe Netherlands 52.996670, 6.562500 place / geonames

Crop and size

crop
wheat (cc: wheat)
diameter
177 ft (53.9 m)
size as written
54 m | 177 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 NL20040828_A
name Assen
location
county Drenthe
country The Netherlands
date reported 2004-08-28
date precision day
crop wheat
size 54 m | 177 ft
diameter (ft) 177
grid reference
what3words
map link
credits cropcirclecenter.com / Bertold Zugelder
source page https://www.cropcirclecenter.com/date/2004/200408.html
link to the entity singleton
decided by none on 2026-09-11
warnings no_formation_page
record cc/6683248fdaf66…
raw record view: /formation/cc/6683248fdaf66257cf597b87fd238e1e5801b101e71ffc27059a2e31fc0c97bd 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.

diagramrotational symmetryelementsringsmirrorfill
cc c1af7800 ≈ 2-fold score 0.889 5 1 0.948 0.342

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 c1af7800— 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
Stavelund 24 August 2004, Stavelund
next
Terdobiatte 31 August 2004, Terdobiatte
previous in NL
Arnhem 17 August 2004
next in NL
Hoeven 6 April 2005
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.

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/NL20040828_A.json · row in index/manifest.jsonl
input digests
entity aa61cefbfa27 · images f03f28d6eefe · texts 4f53cda18c2b · geo 723b4bd7987a