Case file · Retrieval claim
Dropa stones
A 1962 German magazine story claimed 716 grooved stone discs found in the Bayan Har mountains in 1937 told of stranded aliens; it was retold for decades.
1962 CE · 34.10, 97.70 · status: hoax
The sceptical view
None of the named scientists, the agency or the discs can be traced; a 1978 book adding details was later admitted to be satire.