The book "Dungeon: The Story of Robert Sinclair, the Miner" by James C. Welsh tells the story of the life of the main character, who starts working in the mine at a young age. Robert Sinclair witnesses numerous tragedies and events in a dangerous dungeon where every day could be his last. The author explores in detail the psychology of the character, his relationships with other miners and the mysterious anomalies that occur in the mine. "Dungeon" is an exciting book that shows how a person can find inner strength and survive even in the most dangerous conditions through the prism of the realities of miner's life.