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

22 August 2001, to day precision. What a source records is the day a formation was found and reported.

reported by

cc: 22 August 2001

weekday

Wednesday, day 234 of the year, ISO week 34, summer

sun and moon

31.5 days before the September equinox; moon waxing crescent (16% lit), 11.4 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

51.415755, -1.857405 — place, ±2,000 m, by os_open_names, from the cc record

on a map

OpenStreetMap

Crop and size

crop

wheat (cc: wheat)

diameter

not recorded by any source

size as written

not recorded

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 5d782f3a— 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

Chilbolton (2) 21 August 2001, Chilbolton (2)

next

Copdock Hill 23 August 2001, Copdock Hill

previous in UK

Chilbolton (2) 21 August 2001

next in UK

Copdock Hill 23 August 2001

same day

Herveld (Herveld)

within 7 days and 25 km

Waden Hill 15 August 2001, 669 m away, 7 day(s) apart · Avebury Trusloe 26 August 2001, 1.2 km away, 4 day(s) apart · Milk Hill 26 August 2001, 4.2 km away, 4 day(s) apart · All Cannings 28 August 2001, 7.1 km away, 6 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

Pewsey White Horse 25 May 2001 · Hackpen Hill 27 May 2001 · Honeystreet 30 May 2001 · Honeystreet 30 May 2001 · Avebury Stone Avenue 31 May 2001 · Avebury Stone Avenue 31 May 2001 · Berwick Bassett 9 June 2001 · Silbury Hill 13 June 2001 · Badbury Castle 17 June 2001 · Avebury 20 June 2001 · East Kennett 20 June 2001 · Alton Barnes 21 June 2001 · Beckhampton 22 June 2001 · Liddington Castle 24 June 2001 · West Kennett 24 June 2001 · All Cannings 30 June 2001 · Beckhampton 30 June 2001 · Waden Hill 5 July 2001 · Milk Hill 12 July 2001 · Windmill Hill 15 July 2001 and 46 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/UK20010822_A.json · row in index/manifest.jsonl

input digests

entity d74784ffbc46 · images 874bc46b1dc9 · texts 4f53cda18c2b · geo 1fa8596266a1