On 29 January 1986, a glowing sphere crashed into Mount Izvestkovaya near Dalnegorsk in the Soviet Far East. A scientific expedition examined the site and reported unusual material. The object identity was never settled.
Dalnegorsk matters because it is a Soviet physical-trace case with a documented scientific expedition — yet the reported material findings remain unconfirmed and the object identity unresolved.
Residents reported a glowing sphere that crashed into Mount Izvestkovaya (Height 611). The witnessed event is documented.
Documented
The witnessed luminous-object event is documented.
A Soviet scientific expedition from the USSR Academy of Sciences Far Eastern Branch examined the crash site. The expedition reported unusual material findings.
Documented
The expedition and its reported findings are documented.
The reported material findings are not independently confirmed, and their significance is disputed. Secondary literature often calls the case “Russia’s Roswell,” but that framing is not established fact.
Debated
The meaning of the reported material and the object identity are disputed.
The case should be read as a reported physical-trace event with a documented expedition, not as proof of an extraordinary craft.
Unverified
Any extraterrestrial craft or “Soviet Roswell” claim is unverified.
These sources do different jobs: the USSR Academy investigation is the primary record, and the Stonehill/Mantle book is a secondary account. Neither proves an extraordinary object.
The scientific expedition record.
A secondary account, recorded as secondary.