Which of Rosario Castellanos writings won an award?

Rosario Castellanos, a prominent Mexican writer, won the prestigious Miguel de Cervantes Prize in 1977 for her body of work, which includes poetry, essays, and novels. One of her most notable works is the novel "Balún Canán," which explores themes of gender and indigenous identity in Mexico. Castellanos' writing is celebrated for its depth and social critique, earning her recognition as a significant figure in Latin American literature.