Karlag (Karaganda Corrective Labor Camp, Russian: Карагандинский исправительно-трудовой лагерь, Карлаг) was one of the largest Gulag labor camps, located in Karaganda Oblast (now Karagandy Province), Kazakh SSR, USSR. [1] About 800,000 inmates served in total in Karlag over its history.[2]