One day in the Life of Ivan Denisovich (1962) by Aleksandr Solzhenitsyn gives a view of what a Soviet Gulag was like. It’s an important book and was one of the books that lead to Solzhenitsyn getting the Nobel Prize. But I didn’t really get in to it. It’s still worth a read, others seem to find something about the way the camp works more profound of the view of the protagonist as oddly uplifting. It’s not boring or uninteresting but nor is it gripping.