Silbury 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

13 August 1993, to day precision. What a source records is the day a formation was found and reported.

reported by

cc: 13 August 1993

weekday

Friday, day 225 of the year, ISO week 32, summer

sun and moon

40.5 days before the September equinox; moon waning crescent (23% lit), 11.0 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

51.415755, -1.857405 — 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. 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 13bef3b6— 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

Clandown 12 August 1993, Clandown

next

Zaisertshofen 16 August 1993, Zaisertshofen

previous in UK

Clandown 12 August 1993

next in UK

Knebworth 16 August 1993

same day

Crispendorf (Crispendorf) · Devizes (Devizes)

within 7 days and 25 km

East Kennett 17 August 1993, 2.3 km away, 4 day(s) apart · Alton Barnes 7 August 1993, 6.5 km away, 6 day(s) apart · Cherhill White Horse 7 August 1993, 6.5 km away, 6 day(s) apart · Devizes 13 August 1993, 11.9 km away, 0 day(s) apart

In place

The nearest formations the archive can place.

Silbury Hill15 July 1988
Silbury Hill
0 m away, 1988-07-15 Silbury Hill26 July 1988
Silbury Hill
0 m away, 1988-07-26 Silbury Hill30 July 1988
Silbury Hill
0 m away, 1988-07-30 Silbury Hill10 May 1989
Silbury Hill
0 m away, 1989-05-10 Silbury Hill23 June 1989
Silbury Hill
0 m away, 1989-06-23 Silbury Hill28 June 1989
Silbury Hill
0 m away, 1989-06-28

same county and year

West Overton 14 May 1993 · West Kennett 22 May 1993 · Silbury Hill 30 May 1993 · Devizes June 1993 · Beckhampton 1 June 1993 · Wilcot Brow 3 June 1993 · Devizes 7 June 1993 · Beckhampton 8 June 1993 · Waden Hill 8 June 1993 · Lockeridge 11 June 1993 · Cherhill 12 June 1993 · West Kennett 13 June 1993 · Winterbourne 27 June 1993 · Avebury 28 June 1993 · Waden Hill 28 June 1993 · Calstone Wellington June 1993 · Cherhill 4 July 1993 · Lockeridge 4 July 1993 · Baydon 9 July 1993 · Swindon 9 July 1993 and 35 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/UK19930813_B.json · row in index/manifest.jsonl

input digests

entity 14989608483d · images dbd3ab74e32c · texts 4f53cda18c2b · geo 0502df17c0b7