Clench Common

UK19911333_H

1991·Clench Common, Wiltshire

Where it was reported. With no photograph to show, the plate is the place: Clench Common, and every formation the archive holds around it. 3 other formations sit on this exact point, because their sources named the same place and gave no finer position. The dashed ring is how precise the fix is (±2,000 m at place confidence), drawn at its true size.

Reported 1991 at Clench Common, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.

The record

date: 1991 (year precision)
place: Clench Common
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: 51.389929, -1.753105
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 no diagram published by cropcirclecenter (plain circle placeholder)	cropcirclecenter.com / Bertold Zugelder	site default		575×415 32.4 KiB image/jpeg	image c782665e5c68	https://www.cropcirclecenter.com/date/1991/1991unk.html

site

kind

credit

basis

caption

size

file

source page

diagram
no diagram published by cropcirclecenter (plain circle placeholder)

cropcirclecenter.com / Bertold Zugelder

site default

575×415
32.4 KiB image/jpeg

image c782665e5c68

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

Date

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

reported by: cc: 1991

Place

What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.

coordinate: 51.389929, -1.753105 — 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			51.389929, -1.753105 place / os_open_names

site

place

county

country

grid ref

what3words

fix

Wiltshire

England

51.389929, -1.753105 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 UK19911333_H

name Clench Common

location

county Wiltshire

country England

date reported 1991

date precision year

crop

size

diameter (ft)

grid reference

what3words

map link

credits cropcirclecenter.com / Bertold Zugelder

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

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

warnings unknown_month; no_formation_page

record cc/e85a0442b8e2a…
raw record view: /formation/cc/e85a0442b8e2a4138c55b737c4f2312d425e4d92ed82d90ce1779d34f5fbad9d in the preview app

field	cc cropcirclecenter.com
id / slug	UK19911333_H
name	Clench Common
location
county	Wiltshire
country	England
date reported	1991
date precision	year
crop
size
diameter (ft)
grid reference
what3words
map link
credits	cropcirclecenter.com / Bertold Zugelder
source page	https://www.cropcirclecenter.com/date/1991/1991unk.html
link to the entity	singleton decided by none on 2026-09-11
warnings	unknown_month; no_formation_page
record	cc/e85a0442b8e2a… raw record view: `/formation/cc/e85a0442b8e2a4138c55b737c4f2312d425e4d92ed82d90ce1779d34f5fbad9d` 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, of which 1 is a shared cropcirclecenter placeholder rather than a drawing of this formation. 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 c782665e (placeholder: digest)	≈ continuous (concentric circles)	1	1	0.996	1.0049

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 c782665e— 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: Merefa 5 December 1990, Merefa
next: Millersburg February 1991, Millersburg
previous in UK: Beacon Hill 30 August 1990
next in UK: Alton Barnes 18 April 1991
same day: Ulm (Ulm) · JP19910133_A · Donderen (Donderen) · Bareham (Bareham) · Amersham (Amersham) · Beckhampton (Beckhampton) · Blackland (Blackland) · Bryn-y-Maen (Bryn-y-Maen) · Bryn-y-Maen (Bryn-y-Maen) · Caernarfon (Caernarfon) · Clench Common (Clench Common) · Crawley (Crawley) · Crawley (Crawley) · Crawley (Crawley) · Downham Market (Downham Market) · Froxfield (Froxfield) · High Wycombe (High Wycombe) · Longstock (Longstock) · Newhaven (Newhaven) · Sapperton (Sapperton) · South Malling (South Malling) · Sparsholt (Sparsholt) · Sparsholt (Sparsholt) · Steeple Langford (Steeple Langford) · UK19911333_W (Wiltshire) · UK19911333_X (Yorkshire) · UK19911333_Y · US19910101_A · Charles River (Charles River)
within 7 days and 25 km: Clench Common 1991, 0 m away · Beckhampton 1991, 9.0 km away · Blackland 1991, 16.3 km away

In place

The nearest formations the archive can place.

Clench Common15 August 1991
Clench Common
0 m away, 1991-08-15

Clench Common1991
Clench Common
0 m away, 1991

Clench CommonJuly 2000
Clench Common
0 m away, 2000-07

Martinsell11 August 2000
Martinsell
1.9 km away, 2000-08-11

Martinsell Hill19 July 2007
Martinsell Hill
1.9 km away, 2007-07-19

Martinsell Hill28 July 2008
Martinsell Hill
1.9 km away, 2008-07-28

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 · Blackland 28 June 1991 · Morgans Hill 28 June 1991 · Roundway Devizes 28 June 1991 · Lurkeley Hill 29 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/UK19911333_H.json · row in index/manifest.jsonl
input digests: entity d76ff50bb3b7 · images afe2570b1c43 · texts 4f53cda18c2b · geo 466edc34f3d6