Blackland

UK19910628_A

28 June 1991·Blackland, Wiltshire

diagram of Blackland — **cropcirclecenter.com / Bertold Zugelder** (site default) · diagram published by cropcirclecenter.com.

Reported 28 June 1991 at Blackland, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.

The record

date: 28 June 1991 (day precision)
place: Blackland
Wiltshire
England
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: 51.416317, -1.984708
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. 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)

diagram cropcirclecenter.com / Bertold Zugelder site default

site	kind	credit	basis	caption	size	file	source page
cc	diagram	cropcirclecenter.com / Bertold Zugelder	site default		575×415 39.9 KiB image/jpeg	image fdd20c94b7f4	https://www.cropcirclecenter.com/date/1991/199106.html

site

kind

credit

basis

caption

size

file

source page

diagram

cropcirclecenter.com / Bertold Zugelder

site default

575×415
39.9 KiB image/jpeg

image fdd20c94b7f4

https://www.cropcirclecenter.com/date/1991/199106.html

Date

28 June 1991, to day precision. What a source records is the day a formation was found and reported.

reported by: cc: 28 June 1991
weekday: Friday, day 179 of the year, ISO week 26, summer
sun and moon: 6.6 days after the June solstice; moon waning gibbous (98% lit), 1.4 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: 51.416317, -1.984708 — 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			51.416317, -1.984708 place / os_open_names

site

place

county

country

grid ref

what3words

fix

Wiltshire

England

51.416317, -1.984708 place / os_open_names

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 UK19910628_A

name Blackland

location

county Wiltshire

country England

date reported 1991-06-28

date precision day

crop

size

diameter (ft)

grid reference

what3words

map link

credits cropcirclecenter.com / Bertold Zugelder

source page https://www.cropcirclecenter.com/date/1991/199106.html

link to the entity singleton
decided by none on 2026-09-11

warnings no_formation_page

record cc/21a2705412091…
raw record view: /formation/cc/21a27054120917204b3f894e897e1e74e5a48c9df46a5dda87115d2481296122 in the preview app

field	cc cropcirclecenter.com
id / slug	UK19910628_A
name	Blackland
location
county	Wiltshire
country	England
date reported	1991-06-28
date precision	day
crop
size
diameter (ft)
grid reference
what3words
map link
credits	cropcirclecenter.com / Bertold Zugelder
source page	https://www.cropcirclecenter.com/date/1991/199106.html
link to the entity	singleton decided by none on 2026-09-11
warnings	no_formation_page
record	cc/21a2705412091… raw record view: `/formation/cc/21a27054120917204b3f894e897e1e74e5a48c9df46a5dda87115d2481296122` 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 fdd20c94	≈ continuous (concentric circles)	2	2	0.992	0.5603

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 fdd20c94— 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: Highland 26 June 1991, Highland
next: Lurkeley Hill 29 June 1991, Lurkeley Hill
previous in UK: Avebury Trusloe 22 June 1991
next in UK: Lurkeley Hill 29 June 1991
same day: Findon (Findon) · Morgans Hill (Morgans Hill) · Roundway Devizes (Roundway Devizes)
within 7 days and 25 km: Roundway Devizes 28 June 1991, 5.4 km away, 0 day(s) apart · Avebury Trusloe 22 June 1991, 8.4 km away, 6 day(s) apart · Avebury July 1991, 9.1 km away · Milk Hill July 1991, 10.2 km away · East Kennett July 1991, 10.8 km away · East Kennett July 1991, 10.8 km away · Alton Barnes 2 July 1991, 11.4 km away, 4 day(s) apart · Alton Barnes 5 July 1991, 11.4 km away, 7 day(s) apart · Hackpen Hill 4 July 1991, 13.1 km away, 6 day(s) apart · Lockeridge 21 June 1991, 13.6 km away, 7 day(s) apart · Swindon July 1991, 21.2 km away

In place

The nearest formations the archive can place.

Blackland5 September 1987
Blackland
0 m away, 1987-09-05 Blackland1 June 1990
Blackland
0 m away, 1990-06-01

Blackland2 June 1990
Blackland
0 m away, 1990-06-02

Blackland2 June 1990
Blackland
0 m away, 1990-06-02 Blackland14 June 1990
Blackland
0 m away, 1990-06-14

Blackland1991
Blackland
0 m away, 1991

same county and year: Alton Barnes April 1991 · Alton Barnes 18 April 1991 · Mardon Cowbag May 1991 · Yarnbury Castle 13 May 1991 · Marden 27 May 1991 · Whiteparish 27 May 1991 · Whiteparish 27 May 1991 · Whiteparish 27 May 1991 · Avebury Trusloe 9 June 1991 · Avebury Trusloe 14 June 1991 · Avebury Trusloe June 1991 · Beckhampton 18 June 1991 · Stonehenge 18 June 1991 · Beckhampton 20 June 1991 · Lockeridge 21 June 1991 · Avebury Trusloe 22 June 1991 · Morgans Hill 28 June 1991 · Roundway Devizes 28 June 1991 · Lurkeley Hill 29 June 1991 · Furze Knoll June 1991 and 67 more

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/UK19910628_A.json · row in index/manifest.jsonl
input digests: entity 80e5a16dba3a · images a669304aee8c · texts 4f53cda18c2b · geo a01889e86e9b