Dagestan Autonomous Soviet Socialist Republic
The Dagestan Autonomous Soviet Socialist Republic (1921–1991), abbreviated as Dagestan ASSR or DASSR and also unofficially known as Soviet Dagestan or just simply Dagestan, was an autonomous republic of the Russian SFSR within the Soviet Union. This "Land of Mountains" was known also for having a "mountain of peoples," with more than thirty ethnic groups indigenous to the territory.
Source: Wikipedia — Dagestan Autonomous Soviet Socialist Republic (CC BY-SA 4.0)