Былины are traditional East Slavic epic poems that recount the heroic deeds of legendary figures, often set in a historical or mythical context. They typically feature brave warriors, such as Илья Муромец, who defend their homeland against invaders and supernatural forces. These narratives are characterized by their rich imagery and rhythmic structure, making them suitable for oral performance. The origins of былины can be traced back to the medieval period, and they were passed down through generations by wandering bards known as скрипачи. Today, былины are considered an important part of Russian folklore and cultural heritage, reflecting the values and beliefs of the society from which they emerged.