In Slavic mythology, the goddess of death and the underworld is Marzanna. She is often associated with the changing seasons, particularly the transition from winter to spring. Her myths explore themes of life, death, and rebirth, reflecting the cultural understanding of the cyclical nature of existence. Marzanna's role in the natural cycle emphasizes the necessity of change and the interconnectedness of all living beings, serving as a reminder of the delicate balance between creation and destruction.