Hackpen Hill

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

Date

9 June 1994, to day precision. What a source records is the day a formation was found and reported.

reported by

cc: 9 June 1994

weekday

Thursday, day 160 of the year, ISO week 23, summer

sun and moon

12.1 days before the June solstice; moon new (0% lit), 14.0 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

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.

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.

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

Chehalis 8 June 1994, Chehalis

next

Pemberton 12 June 1994, Pemberton

previous in UK

Wadebridge 8 June 1994

next in UK

West Kennett 13 June 1994

same day

Williams Lake (Williams Lake) · McBee (McBee) · McBee (McBee)

within 7 days and 25 km

West Kennett 13 June 1994, 6.3 km away, 4 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 HillAugust 1994
Hackpen Hill
0 m away, 1994-08 Hackpen Hill11 June 1997
Hackpen Hill
0 m away, 1997-06-11 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

Northdown July 1994 · Avebury Stone Avenue 2 February 1994 · Avebury Stone Avenue February 1994 · Avebury 23 April 1994 · Avebury 25 April 1994 · Beckhampton 26 April 1994 · Beckhampton 27 April 1994 · Avebury Stone Avenue May 1994 · Barbury Castle 1 May 1994 · Monkton Down 2 May 1994 · Newbury 3 May 1994 · Beckhampton 5 May 1994 · Morgans Hill 7 May 1994 · West Overton 7 May 1994 · Beckhampton 14 May 1994 · Preshute Downs 18 May 1994 · West Kennett 22 May 1994 · Beckhampton 23 May 1994 · Silbury Hill 25 May 1994 · Cherhill 26 May 1994 and 59 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/UK19940609_A.json · row in index/manifest.jsonl

input digests

entity 08ab15faf56f · images cde4d9495e39 · texts 4f53cda18c2b · geo be59f233320d