"Mistress of the Copper Mountain" is a popular Russian fairy tale that tells the story of a powerful spirit who rules over the mountains and their riches. This spirit, often depicted as a beautiful woman, is known for her ability to control the flow of copper and other minerals. She is both a protector and a temptress, drawing miners to her domain with promises of wealth. In the tale, a brave hero encounters the Mistress while seeking fortune. He must navigate her challenges and prove his worth to gain her favor. The story explores themes of greed, respect for nature, and the consequences of one's choices, making it a rich narrative in Russian folklore.