Soviet system of prison camps (5)

I believe the answer is:

gulag

(Other definitions for gulag that I've seen before include "Labour camp for political prisoners" , "Soviet political prison system" , "place of detention" , "Russian prison and labour camp organisation" , "USSR system of labour camps" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.