I finished the second book in the saga titled "The Tombs of Atuan". It's great.
It follows the story of Tenar, a girl taken to an old temple in the desert to be the priestess devoted to the "Nameless Ones", ancient gods long forgotten.
She was very lonely there; all her life changed when she met Ged, the first book's protagonist, who was in the underground labyrinth under the temple looking for an ancient relic. This encounter completely changes Tenar's life.
The main topics of the book are freedom, gender, and the power relations emanating between those, reflecting the anarchist views of Ursula.