The uniqueness of the main apse paintings must be sought in its iconography. The paintings, conceived as a large mural retable, are structured in different records and divisions where scenes are narrated that correspond to the cycle of the Infancy of Christ, Passion and Dormition of Mary. A closer look, despite its state of disrepair, still enables us to identify some scenes: the Annunciation, Visitation, Nativity, Epiphany, Crucifixion, Resurrection... Dating back to the first third of the 14th century, the paintings were partly mutilated by the construction of the access door to the sacristy and the opening of the cabinet that must have contained a relic of the Holy Cloth.