Hackpen Hill

UK19970611_A

11 June 1997·Hackpen Hill, Wiltshire

Possibly the same formation as: these cross-site pairs are still open in the index review queue.

Rockley Down (Rockley Down)(lp, tier C, score 0.60, rule county_only, pair 72cca13a)
date 1997-06-11 vs 1997-06-11 (delta +0 d); county Wiltshire == Wiltshire; country UK (cc_id) == UK (country_field)

Where it was reported. With no photograph to show, the plate is the place: Hackpen Hill, and every formation the archive holds around it. 28 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 11 June 1997 at Hackpen Hill, Wiltshire. One archive recorded it, so nothing about it can be cross-checked.

The record

date: 11 June 1997 (day precision)
place: Hackpen Hill
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: 51.468306, -1.815723
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 same file as tt	diagram no diagram published by cropcirclecenter (“no diagram” tile)	cropcirclecenter.com / Bertold Zugelder	site default		575×415 66.1 KiB image/jpeg	image 3461dff5df5d	https://www.cropcirclecenter.com/date/1997/199706.html

site

kind

credit

basis

caption

size

file

source page

cc
same file as tt

diagram
no diagram published by cropcirclecenter (“no diagram” tile)

cropcirclecenter.com / Bertold Zugelder

site default

575×415
66.1 KiB image/jpeg

image 3461dff5df5d

https://www.cropcirclecenter.com/date/1997/199706.html

Date

11 June 1997, to day precision. What a source records is the day a formation was found and reported.

reported by: cc: 11 June 1997
weekday: Wednesday, day 162 of the year, ISO week 24, summer
sun and moon: 9.8 days before the June solstice; moon waxing crescent (34% lit), 9.3 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: 51.468306, -1.815723 — 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			51.468306, -1.815723 place / os_open_names

site

place

county

country

grid ref

what3words

fix

Wiltshire

England

51.468306, -1.815723 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 UK19970611_A

name Hackpen Hill

location

county Wiltshire

country England

date reported 1997-06-11

date precision day

crop

size

diameter (ft)

grid reference

what3words

map link

credits cropcirclecenter.com / Bertold Zugelder

source page https://www.cropcirclecenter.com/date/1997/199706.html

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

warnings no_formation_page

record cc/77fbbe94a6600…
raw record view: /formation/cc/77fbbe94a66009b8a8e840ce0c30a11279c72d9d4899d79bc45afd5b29be8a95 in the preview app

field	cc cropcirclecenter.com
id / slug	UK19970611_A
name	Hackpen Hill
location
county	Wiltshire
country	England
date reported	1997-06-11
date precision	day
crop
size
diameter (ft)
grid reference
what3words
map link
credits	cropcirclecenter.com / Bertold Zugelder
source page	https://www.cropcirclecenter.com/date/1997/199706.html
link to the entity	singleton decided by none on 2026-09-11
warnings	no_formation_page
record	cc/77fbbe94a6600… raw record view: `/formation/cc/77fbbe94a66009b8a8e840ce0c30a11279c72d9d4899d79bc45afd5b29be8a95` 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 3461dff5 (placeholder: digest)	≈ 2-fold score 0.906	4	3	0.853	0.3434

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 3461dff5— 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: Droxford 10 June 1997, Droxford
next: Perquimans County 12 June 1997, Perquimans County
previous in UK: Droxford 10 June 1997
next in UK: Warnford 13 June 1997
same day: Kilmeston (Kilmeston) · Rockley Down (Rockley Down)
within 7 days and 25 km: Rockley Down 14 June 1997, 4.5 km away, 3 day(s) apart · Marlborough 14 June 1997, 7.9 km away, 3 day(s) apart · Hinton Parva 16 June 1997, 13.4 km away, 5 day(s) apart

In place

The nearest formations the archive can place.

Hackpen Hill4 July 1991
Hackpen Hill
0 m away, 1991-07-04

Hackpen HIll12 July 1991
Hackpen HIll
0 m away, 1991-07-12 Hackpen Hill9 June 1994
Hackpen Hill
0 m away, 1994-06-09 Hackpen HillAugust 1994
Hackpen Hill
0 m away, 1994-08

Hackpen Hill18 August 1997
Hackpen Hill
0 m away, 1997-08-18

Hackpen Hill17 August 1998
Hackpen Hill
0 m away, 1998-08-17

same county and year: Alton Barnes 27 March 1997 · Alton Barnes 27 March 1997 · Alton Barnes 27 March 1997 · Barbury Castle 20 April 1997 · Littlebury Greene 22 April 1997 · Barbury Castle 6 May 1997 · Barbury Castle May 1997 · Silbury Hill May 1997 · Winterbourne Bassett 1 June 1997 · Fox Hill 8 June 1997 · Stonehenge 9 June 1997 · Marlborough 14 June 1997 · Rockley Down 14 June 1997 · Hinton Parva 16 June 1997 · Charlton 29 June 1997 · Bishops Waltham 9 July 1997 · Alton Barnes 11 July 1997 · Woodborough Hill 11 July 1997 · Bishops Cannings 13 July 1997 · Cley Hill 13 July 1997 and 42 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: 72cca13a1537aa02c34ddee71c3816f0ba7b948a462dbf66d956a9fca485ad85
entity record: index/formations/UK19970611_A.json · row in index/manifest.jsonl
input digests: entity 5bab6f9de710 · images cde4d9495e39 · texts 4f53cda18c2b · geo 650bab8d9fd3