On January 29, 1986, residents of Dalnegorsk in the Soviet Far East reportedly observed a reddish luminous sphere moving across the sky before descending toward Height 611. Witness accounts described a fire or glow at the hillside lasting about an hour. An investigative team later examined the reported site and collected metallic droplets, glassy particles and mesh-like fragments. The event is notable for its reported physical traces, although the origin of the object and the connection between the recovered samples and the sighting remain unconfirmed.
The Dalnegorsk Height 611 incident is one of the best-known Soviet-era UFO cases involving reported physical traces. On the evening of January 29, 1986, residents reportedly watched a reddish-orange luminous sphere travel across the area before descending toward a rocky hillside known as Height 611, or Mount Izvestkovaya. Accounts differ on aspects of the object's final movement, and some described a prolonged fire or glow at the site. An expedition associated with researcher Valery Dvuzhilny examined the hillside in early February and reported finding an area showing signs of heating, along with metallic droplets, glassy particles and thin mesh-like material. Subsequent accounts described laboratory analyses of some collected samples. However, the public record does not provide a complete, independently verifiable chain of custody connecting every sample to the observed object, nor does the existence of unusual-looking material establish an extraterrestrial origin. The case should therefore be documented as a reported luminous-object descent and subsequent material investigation, with the extraordinary interpretations kept separate from the evidence that can be substantiated.
| Date: | 1986-01-29 |
| Location: | Height 611 (Mount Izvestkovaya), Dalnegorsk, Primorsky Krai |
| Country: | Soviet Union |
| Category: | UFO Crash |
| Credibility: | Disputed |