GULAG prisoners transporting cargo along the Izhma River. Circa 1930s / via Wikimedia Commons
Interior of a women's barrack in a GULAG correctional labor camp. 1936–1937 / NYPL Digital Library / Wikimedia Commons
Lithuanian political prisoners in a mine at Jezkazgan-Rudnik, Kazakhstan. Second half of the 20th century / Kaunas 9th Fort Museum / Europeana / Wikimedia Commons
A group of political prisoners in Kengir, part of the Soviet Gulag system. Lithuanian Aleksandra Kišonaitė (Miknevičienė) is in the last row on the right. She was arrested in May 1949 / Kaunas 9th Fort Museum / Europeana / Wikimedia Commons
GULAG labor camp. Construction of the Salekhard–Igarka Railway, known as the "Dead Road". Soviet Union, 1950s / Laski Diffusion / via Getty Images
Prisoners in their shack in the Vorkuta Gulag (Vorkutlag), one of the major Soviet labor camps. USSR, Komi Republic, 1945 / Laski Diffusion / Hulton Archive / Getty Images
Yevgeny Khaldei. T-34-76 tank, 1943 model. Hungary, February of 1945 / Wikimedia Commons
«Soviet power does not punish, it corrects» – slogan on the wall of the former Red Corner punishment cell of the GULAG / State Museum of the Political History of Russia, St. Petersburg / Fine Art Images / Heritage Images / Getty Images
Copper mine about 40 km from Kengir (Jezkazganlag), part of the Soviet Gulag system. 1955 / Wikimedia Commons