Znamensk, Astrakhan Oblast Znamensk, Astrakhan Oblast Znamensk () is a closed town in Astrakhan Oblast, Russia. Population: It was founded in 1948 as Kapustin Yar-1 to serve a missile test range known as Kapustin Yar. Town status was granted in 1962. The closed town was renamed Znamensk in 1992. The military testing range is officially known as 4GCMP (4th State Central Interspecific Test-site). Kapustin Yar is also the name of a nearby village. Within the framework of administrative divisions, it is incorporated as the closed administrative-territorial formation of Znamensk—an administrative unit with the status equal to that of the districts. As a municipal
Astrakhan Oblast Okrug of Stalingrad Oblast. From October 8, 1980 to October 27, 1984, and under the leadership of Nikolai Baibakov, the USSR held fifteen deep underground nuclear tests for Nuclear Explosions for the National Economy at the site "Vega" in the Ryn Desert in the east of the oblast less than 50 km from downtown Astrakhan to create reservoirs for natural gas storage. Because of the detonation depth (975 to 1,100 meters) and relatively low yield (3.2 to 13.5 kilotons), no radiation was released to the environment. These blasts had lower yields than the Project "Sapphire" blasts, which were 40 km