The term 'labor camp' is often used to refer to a type of prison or detention center where inmates are forced to work. The most famous example of this is the Soviet Union's Gulag system, which was a network of labor camps that operated from the 1920s to the 1950s. The word 'Gulag' is an acronym for the Russian phrase 'Glavnoe Upravlenie Lagerei, ' which translates to 'Main Camp Administration.'