"Kalev's Sons" is an epic poem written by the Estonian poet Carl Robert Jakobson in the late 19th century. It is a significant work in Estonian literature, reflecting the national awakening and cultural identity of the Estonian people. The poem tells the story of the mythical hero Kalev and his sons, who embark on various adventures and battles, symbolizing the struggle for freedom and justice. The narrative is rooted in Estonian folklore and incorporates themes of heroism, nature, and the importance of community. "Kalev's Sons" has inspired numerous adaptations in literature, music, and theater, making it a cornerstone of Estonian cultural heritage.