Within St Clair Triangle
Was It Really One Triangular Craft?
The case is harder to interpret because witnesses described a rectangle, a narrow triangle, an arrowhead and distant lights.
On this page
- What each main witness said about the object's shape
- How viewing angle and darkness could change the impression
- Why the Dupo report may not match the same object
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Introduction
One of the most difficult parts of the St. Clair Triangle case is deciding whether all the witnesses were actually describing the same thing. The incident is often remembered as a classic “black triangle” UFO over southern Illinois, but the original reports were not fully consistent. Some witnesses described a rectangle. Others spoke of a narrow triangle or an arrowhead. A few accounts focused mainly on bright lights with little visible structure at all. Those differences matter because the credibility of the case depends partly on whether multiple observers independently tracked one large object across the Metro East region, or whether several unrelated aerial lights and aircraft were mentally combined into a single dramatic story. [Skeptoid]skeptoid.comSkeptoidThe St. Clair Triangle UFO7 Oct 2014 — It was big, taller in the middle, with lots of lights on it; white on the extremities and…
The shape problem does not automatically disprove the sighting. Night-time observations are notoriously vulnerable to distortion. Distance, darkness, motion, viewing angle and scattered lights can all change how an object is interpreted. But the inconsistencies are significant enough that sceptics have repeatedly used them as evidence against the “single gigantic triangular craft” interpretation.
What each main witness said about the object’s shape
The first key witness, Highland resident Melvern Noll, did not initially describe a classic triangle at all. According to early reconstructions by investigator David Marler, Noll spoke of a large rectangular object resembling a two-storey building moving slowly overhead. He reportedly noticed illuminated sections that looked almost like windows, along with dim red lights underneath. [Skeptoid]skeptoid.comSkeptoidThe St. Clair Triangle UFO7 Oct 2014 — It was big, taller in the middle, with lots of lights on it; white on the extremities and…
That description differs sharply from the later public image of the case. Once police officers became involved, the dominant narrative shifted towards a triangular or arrowhead-shaped craft. Officer Ed Barton and other officers in the Lebanon and Shiloh areas described bright white lights arranged in a formation that suggested a narrow triangle. Some later summaries used the term “arrowhead”, implying a pointed front with lights spread along the rear edges. [Facebook]facebook.comFacebookA UFO sighting near Highland, Illinois, occurred in the early…This sighting was corroborated by a policeman from Shiloh, who d…
Even among the officers, however, there was no perfectly uniform description. Some accounts concentrated on the lights themselves rather than the body of the object. Others suggested an elongated shape rather than an equilateral triangle. The often-reproduced police Polaroid photograph did not settle the issue because it captured only blurred light traces rather than a clear outline. Debate over the image has continued for years, with believers arguing that it supports a structured craft and sceptics arguing that it merely records moving lights during a shaky long exposure. [Reddit]reddit.comthe st clair triangle ufo incident of 2000RedditTHE ST. CLAIR TRIANGLE UFO INCIDENT OF 2000March 13, 2022 — Analysis of some of the current UFO files · r/UFOs - Analysis of some o…
This is a recurring problem in “black triangle” UFO reports generally. Witnesses often infer a solid object from the arrangement of lights rather than clearly seeing a sharply defined craft. Researchers of triangular UFO reports have long noted that descriptions vary between V-shapes, boomerangs, narrow wedges and large dark rectangles depending on perspective and lighting conditions. [Wikipedia]WikipediaBlack triangle (UFOSeptember 2, 2004 — Black triangles are UFOs reported as having a triangular shape and dark color, typically observed at night, described… [HISTORY]history.comHISTORYHuge, Hovering and Silent: The Mystery of 'Black Triangle'…22 Jul 2020 — Among the most commonly reported shapes were V-shaped…
How viewing angle and darkness could change the impression
The St. Clair case unfolded before dawn in winter darkness, exactly the kind of environment where shape perception becomes unreliable. Human observers are poor at judging the outline of dark airborne objects at night, especially when the main visible features are isolated lights.
A narrow triangular formation seen head-on can appear rectangular or even linear. Conversely, a rectangular object viewed diagonally can seem triangular if only three major light points are visible. If one light is obscured by angle, haze or glare, the mind tends to “complete” a geometric pattern automatically.
Several specific conditions in the St. Clair sightings could have amplified this effect:
- Star masking: Some officers said the object blocked out stars as it passed overhead. That can create the impression of a solid dark body even when the observer mainly sees lights against the sky.
- Low contrast: The reported craft was darker than the surrounding sky, making edge definition uncertain.
- Motion and tracking: Witnesses were often driving or repositioning themselves while observing.
- Cold-weather viewing: January night conditions can reduce visual clarity and increase atmospheric distortion.
- Expectation effects: Once officers heard radio reports describing a large object, later witnesses may unconsciously have interpreted ambiguous lights within that framework.
These factors do not mean the witnesses imagined the event. They do, however, make precise geometry difficult to trust. Even experienced observers can disagree about the shape of aircraft at night when only navigation lights are visible.
The case also illustrates a broader issue in UFO history: many “triangles” may partly be constructions of perception. A witness sees separated lights first and infers a connecting dark mass afterward. The final remembered shape then becomes more definite during retelling. That process may help explain why the St. Clair accounts gradually converged into the simpler “massive black triangle” label despite earlier variation. [Wikipedia]WikipediaBlack triangle (UFOSeptember 2, 2004 — Black triangles are UFOs reported as having a triangular shape and dark color, typically observed at night, described…
Why the Dupo report may not match the same object
The Dupo sighting is one reason some investigators doubt that a single object travelled continuously across all the reported locations.
By the time reports reached Dupo, the timeline had stretched considerably from the earlier Highland and Lebanon observations. Accounts from the southern end of the sequence sometimes described distant lights rather than a close overhead object. The geometry and apparent movement also became less consistent.
If the Dupo observers were seeing the same object, it would imply a coherent flight path moving south-west across multiple towns. Supporters of the case argue that the police radio exchanges strengthen that interpretation because officers were independently reporting a moving target in real time.
Sceptics counter that the Dupo observation may instead have involved unrelated aircraft lights viewed at long range. The closer and more dramatic descriptions came earlier in the event. Later observers may have been trying to identify something already being discussed over police radio, increasing the risk that ordinary lights became linked into the same narrative.
This matters because the strongest version of the St. Clair Triangle story depends on continuity. If the Highland, Lebanon, Shiloh and Dupo witnesses all tracked one huge structured craft, the case becomes harder to dismiss as a simple aircraft misidentification. But if the reports actually involve multiple different visual stimuli interpreted through a shared expectation, then the apparent consistency weakens considerably.
The Dupo segment is especially vulnerable because distant lights near the St Louis air corridor can easily produce ambiguous impressions. The region lies near busy aviation routes and close to Scott Air Force Base, creating opportunities for confusion involving conventional aircraft seen from unusual angles. That does not fully explain the earlier close-range reports, but it complicates the idea of one uninterrupted triangular craft crossing the entire area.
Why the shape inconsistencies still matter
The conflicting descriptions remain one of the central unresolved weaknesses in the St. Clair Triangle case. They do not erase the unusual aspects of the event, particularly the clustered police testimony and the real-time dispatch communications. But they do make the case harder to interpret cleanly.
Two competing interpretations emerge from the same evidence:
- Single-object interpretation: Witnesses saw one large structured craft whose appearance changed because of angle, distance and lighting.
- Multiple-stimulus interpretation: Witnesses across different towns saw different aerial lights or aircraft and unconsciously merged them into one narrative after hearing radio traffic and later media coverage.
Neither explanation fully resolves every detail. The first struggles with the contradictory geometry. The second struggles with the confidence and apparent sincerity of several police witnesses who believed they were observing a solid low-flying object.
That tension is part of why the St. Clair Triangle remains significant within Illinois UFO history. It is not a simple “solved” case, but neither is it a clean, internally consistent report of a single craft. The shape problem sits at the centre of that ambiguity.
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Further Reading
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Triangular UFOs
Directly addresses triangular craft reports and interpretation issues.
Endnotes
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Source: skeptoid.com
Link: https://skeptoid.com/episodes/435Source snippet
SkeptoidThe St. Clair Triangle UFO7 Oct 2014 — It was big, taller in the middle, with lots of lights on it; white on the extremities and...
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Source: history.com
Link: https://www.history.com/articles/black-triangle-ufos-factsSource snippet
HISTORYHuge, Hovering and Silent: The Mystery of 'Black Triangle'...22 Jul 2020 — Among the most commonly reported shapes were V-shaped...
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Source: facebook.com
Link: https://www.facebook.com/asthmatickitty/posts/a-ufo-sighting-near-highland-illinois-occurred-in-the-early-morning-of-january-5/1458036326327075/Source snippet
FacebookA UFO sighting near Highland, Illinois, occurred in the early...This sighting was corroborated by a policeman from Shiloh, who d...
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Source: reddit.com
Title: the [st clair triangle]({{ ‘st-clair-triangle/’ | relative_url }}) ufo incident of 2000
Link: https://www.reddit.com/r/UFOs/comments/tdc87r/the_st_clair_triangle_ufo_incident_of_2000/Source snippet
RedditTHE ST. CLAIR TRIANGLE UFO INCIDENT OF 2000March 13, 2022 — Analysis of some of the current UFO files · r/UFOs - Analysis of some o...
Published: March 13, 2022
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Source: Wikipedia
Title: Black triangle (UFO)
Link: https://en.wikipedia.org/wiki/Black_triangle_%28UFO%29Source snippet
September 2, 2004 — Black triangles are UFOs reported as having a triangular shape and dark color, typically observed at night, described...
Published: September 2, 2004
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Source: reddit.com
Link: https://www.reddit.com/r/HighStrangeness/comments/yykok6/calling_all_people_who_have_witnessed_a_black/Source snippet
Had small white flat rectangle lights on each corner, and...Read more...
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Source: reddit.com
Link: https://www.reddit.com/r/UFOs/comments/o429sx/david_marler_has_17000_archived_triangle_cases/Source snippet
ones. And not saucers, only triangles. Some are enormous. X...Read more...
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Source: facebook.com
Title: But why? A new episode of #UFOWitness drops on discovery+
Link: https://www.facebook.com/TravelChannel/posts/there-is-no-doubt-black-triangle-ufos-have-been-appearing-in-our-skies-with-incr/10160335410328851/Source snippet
There is no doubt, black triangle UFOs have been...There is no doubt, black triangle UFOs have been appearing in our skies with increasi...
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Source: facebook.com
Title: fbi documents released through the national archives detail a reported ufo sight
Link: https://www.facebook.com/fox9kmsp/posts/fbi-documents-released-through-the-national-archives-detail-a-reported-ufo-sight/1469292275240224/Source snippet
FBI documents released through the National Archives...2000) "Illinois police officers track UFO near Scott AFB" "During my ten years of...
Additional References
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Source: amazon.co.uk
Link: https://www.amazon.co.uk/Triangular-UFOs-Mr-David-Marler/dp/1490465812Source snippet
Triangular UFOs: An Estimate of the SituationDavid Marler has provided a comprehensive analysis of “the triangles.” He has collected, col...
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Source: levelup.gitconnected.com
Title: i used an llm to analyze 140 000 ufo reports the aliens are real 3d589ec4055d
Link: https://levelup.gitconnected.com/i-used-an-llm-to-analyze-140-000-ufo-reports-the-aliens-are-real-3d589ec4055dSource snippet
The Aliens...4 Mar 2026 — What happens when you use AI to analyze 140000 UFO reports? A humorous data-driven dive into a world of alien...
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Source: youtube.com
Link: https://www.youtube.com/watch?v=YhSLMzX3MnwSource snippet
TRIANGULAR UFO Breakdown by Author David Marler + His...Den of Geek UFO reporter Alejandro Rojas will live interview David Marler, a UFO...
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Source: youtube.com
Link: https://www.youtube.com/watch?v=wkm3KxIyZDESource snippet
The longstanding mystery of BLACK TRIANGLE UFOsThe tr3b is a giant black aircraft that was built using reverse engineered alien technolog...
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Source: storage.googleapis.com
Title: Triangular UFOs The Ongoing Historical Examination
Link: https://storage.googleapis.com/wzukusers/user-17890272/documents/87f71dbd71994701b1ca4161226c96ec/Triangular%20UFOs%20-%20The%20Ongoing%20Historical%20Examination.pdfSource snippet
Triangular UFOs – The Ongoing Historical ExaminationThe witness wrote the following account: “1970 in Baltimore County my wife and I saw...
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Source: scribd.com
Link: https://www.scribd.com/document/616987456/triangular-ufos-an-estimate-of-the-situation-by-david-marler-john-b-alexander-richard-m-dolan-mark-rodeghier-sam-maranto-george-wingfield-omar-fowlerSource snippet
ar UFOs can be relied on, without question. A compelling read!Read more...
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Source: instagram.com
Link: https://www.instagram.com/reel/DTJDdqVkoHR/?hl=enSource snippet
January 5, 2000, when multiple witnesses reported a massive, silent...
Published: January 5, 2000
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Source: assets.ctfassets.net
Title: 24741 Properties of Shapes pack 3
Link: https://assets.ctfassets.net/pc40tpn1u6ef/file-26625/3f95c35551dfb75bdc6b2480e4c7ce9d/24741-Properties_of_Shapes_pack_3.pdfSource snippet
of Shapes Pack ThreeWha shapes do you get? Change the angle between the folds. Can you make a kite? an arrowhead kite? an isosceles trian...
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Source: youtube.com
Link: https://www.youtube.com/watch?v=BlDLDRT-whUSource snippet
The Police Confirmed UFO Sighting video provides a detailed look at the original accounts, highlighting the contradictions between initia...
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Source: philpapers.org
Link: https://philpapers.org/rec/ALETUASource snippet
Triangular UFOs: An Estimate of the Situation by Dave...by JB Alexander · 2016 · Cited by 2 — Reports of UFOs range from little balls of...
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