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1990 · near Calvine, about 20 miles north of Pitlochry off the A9, Perthshire, Scotland

Calvine: the diamond-shaped object and the Harrier

On the record
Strength B · 8/10 · 3 independent
Evidence 4/4 · Witnesses 2/3 · Backing 2/3

The MoD logged the sighting and examined the negatives without explaining the object, and a surviving print shows no sign of a hoax, though the photographers have never been named.

Plausibility High
Score 12 · 7 factors for, 0 against

The MoD logged the sighting and examined the negatives without explaining it; a surviving print shows no sign of a hoax, though the photographers are unnamed.

See the factors ↓

Natural cause proposed, not demonstrated
The Calvine photograph (4 August 1990): a diamond-shaped object with a jet below it. Print kept by former RAF press officer Craig Lindsay, released 2022. · Photograph by an unnamed witness (copyright marked Kevin Russell c/o Daily Record); print via Craig Lindsay and the Calvine research team, reproduced for identification
When4 August 1990, about 21:00 BST
Wherenear Calvine, about 20 miles north of Pitlochry off the A9, Perthshire, Scotland
Backing3 independent
Evidenceofficial records, physical traces, documents

On the evening of 4 August 1990, witnesses near Calvine (the MoD note redacts the reporting witnesses and adds "+ 1 unidentified other"), in Highland Perthshire, photographed a large diamond-shaped object. They said it hovered for about ten minutes and then rose vertically at high speed, while a jet, believed to be a Harrier, made several low passes. The photographs went to the Scottish Daily Record, which did not publish them. The paper passed the colour negatives to RAF Pitreavie and on to the Ministry of Defence (MoD). The MoD's UFO desk recorded the incident in a handwritten note. A loose minute of 14 September 1990 says its staffs identified the jet as a Harrier, saw a probable second Harrier, and "reached no definite conclusion" about the large object. The negatives were not kept. A print kept by RAF press officer Craig Lindsay surfaced in 2022. A Sheffield Hallam University analysis (Robinson, 2024) found no evidence of manipulation in it. The photographers have never been publicly identified, and the object has not been explained.

Evidence, in date order (3)

  1. 1990Craig Lindsay (RAF press officer)physical
    kept a print of one photograph, which surfaced in 2022 DEFE 24/1940 (mirror)
  2. 14 Sept 1990MoD Sec(AS) loose minuteofficial
    staffs identified the Harrier but reached no conclusion on the large object DEFE 24/2048 (mirror)
  3. Jun 2024Andrew Robinson (Sheffield Hallam University)document
    found no evidence of manipulation in the surviving print Robinson, Sheffield Hallam University (2024)

How plausible · High

The MoD logged the sighting and examined the negatives without explaining it; a surviving print shows no sign of a hoax, though the photographers are unnamed.

  • ●●
    Access They photographed it.
  • ●●
    No gain sought They never sold it.
  • ●●
    Checkable details check out MoD files; the surviving print.
  • ●●
    Fits secrecy practice Withheld for decades.
  • ●●
    Physical traces or official reaction Photographs analysed in 2024.
  • ●○
    Restraint Went quietly to a newspaper.

Plausibility weighs how well an account fits where secrecy hides the documents by design, so missing records never count against it. Strength measures what is documented. Assessed 2026-10-23.

On the record

  • DEFE 24/1940, p. 115 (official MoD note, firsthand transcription of a report). The note records: a "large diamond shape UFO hovering for about 10 minutes before ascending vertically upwards at high speed"; "During sighting RAF aircraft, believed to be a Harrier made a number of low level passes for 5 to 6 minutes"; that the report was passed to the RAF Press Officer at Pitreavie MHQ, and colour photographs went to RAF Pitreavie and the *Scottish Daily Record*; weather: cloud base 25,000 ft, occasional showers, 14°C; questions about the photos still open.
  • DEFE 24/2048, p. 28: Loose Minute of 14 September 1990 (official analysis). Six negatives were received on 10 September; the place is misspelt "Clavine". Staffs "established that the jet aircraft is a Harrier (and also identified a barely visible second aircraft, again probably a Harrier) but have reached no definite conclusion regarding the large object". The minute adds that there was "no record of Harriers operating in the area".
  • DEFE 24/2048, p. 12: DAS-FOI letter, 3 February 2005 (official): "No definite conclusions were reached regarding large diamond-shaped object". The negatives were returned.
  • Ministerial statements (official, secondhand via Clarke): Nicholas Soames, 24 July 1996: the negatives were not retained, and the photos showed "nothing of defence significance". James Heappey, 2022: the only surviving papers are in DEFE 24/1940/1.
  • Robinson (2024) (analysis): The Lindsay print is a genuine photographic copy, made from a copy negative (Ilford XP-1) of a colour print on Kodak Ektacolor 78 paper. "If the image is the result of a hoax, no evidence of this is present in the image." Assuming a 50 mm lens, the object is about 30-40 m long and 8-12 m high. A reflection in a lake is unlikely but not ruled out. Possible location: An Teampan on Struan Point. The photographer is unknown. The print is credited to "Kevin Russell", a Hydro Hotel kitchen porter, who denies any knowledge of it.

Claims

The photographers, reported in popular accounts to be two hotel workers, took the photographs while out walking and reported the object to the *Daily Record*secondhandSourced, unconfirmedDaily Record staff (news editor Malcolm Speed, quoted via Clarke) and RAF press officer Craig Lindsay. The witnesses' own firsthand account is not public. The M
A Daily Record journalist (Andy Allan) protected the photographers' identitysecondhandSourced, unconfirmedvia Clarke.
The MoD suppressed the photos and pressured the paper not to publishspeculationSourced, unconfirmedpopular accounts. Lindsay kept a print. The paper's reasons for not publishing are reported differently in different accounts; none verified here.
The object was a classified US aircraft escorted by HarriersspeculationSourced, unconfirmedvarious commentators; no document supports it.
In the MoD's Condign file the Calvine photograph appears among 35 mm slides listed as 'Astra/Aurora' photos.thread/trianglesUFOs in the Private Sector - Lockheed MartinfirsthandSourced, unconfirmedMoD Condign file (cited by UAP Gerb)
The object was the Lockheed 'Astra/Aurora' triangle, a reverse-engineered US craft.Lockheed Martin Skunk Worksthread/trianglesUFOs in the Private Sector - Lockheed MartinspeculationLeadUAP Gerb (Sam)

Where

near Calvine, about 20 miles north of Pitlochry off the A9, Perthshire, Scotland
56.8°N 4.0°W
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Sources

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