On 29 January 1986 a reddish sphere crossed this town in the Russian Far East and struck the rock of a hill the locals know by its elevation — Height 611. Dozens of people watched it come down; there was no impact and no explosion, and it moved slowly and almost without sound. A burnt patch was found on the rock, and in it mesh-like fragments of an iron, chromium and nickel alloy, glassy spheres and beads of lead. The samples were carried round Soviet institutes for years; the results diverged, and some researchers concluded the composition was industrial and terrestrial. Dozens of expeditions have examined the site since. Dalnegorsk remains the best-known place in the subject in Russia after Molyobka.

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Roswell

On 8 July 1947 the army airfield at Roswell issued a press release saying it had recovered a "flying disc". Hours later the statement was withdrawn and the debris called a weather balloon. It would have been forgotten if participants had not started telling it differently in the late 1970s; by the 1990s Roswell was shorthand for cover-up. In 1994 the Air Force admitted the balloon was not meteorological but part of Project Mogul, listening for Soviet nuclear tests — a truth forty-seven years late, which by then convinced nobody.