Recent satellite observations suggest possible preparations for renewed testing or subcritical tests. Map Anatomy & Visual Features
The Soviet Union's primary testing ground from 1949 to 1989. It hosted 456 nuclear explosions, including the first Soviet nuclear device, RDS-1 . nuclear test site (lekoopas private map)
Civil defense "Doom Towns" (wooden houses, vehicles, and mannequins) built to test the effects of a blast on urban environments. Nuclear Test Sites - Atomic Archive including the first Soviet nuclear device