GULAG

Russian camp for political prisoners (5)

Solution has appeared in 3 crosswords (2 across and 1 down):

• Quick crossword No 16,734 — 2023-12-23 00:00:09
  6D: Stalin-era labour camp (5)
• Quick crossword No 16,342 — 2022-09-21 23:00:41
  22A: Soviet forced labour camp (5)
• Quick crossword No 15,953 — 2021-06-23 23:00:40
  10A: Russian camp for political prisoners (5)