The capitals of the chancel reveal a degree of definition and precision of iconography, unique, which lead us to believe that it was the work of an artisan who worked only in this church, and only in his chancel. All the symbolism of the iconographic decoration sculpted in the granite of its portals (Axial and South) and the interior capitals are its main characteristic.

The tympanum contains the figuration of Saint Augustine welcomed and accompanied by his traditional symbols and is later (1200) than the rest of the building. The tympanum of the north portal shows, in relief, a combat of two fantastic beings - a griffin and a dragon. The chancel is a precious masterpiece of Portuguese Romanesque. The cannon vault that covers it was built on square arches with square sections. Its low height forced the side edges to partially tear the vault. The capitals of the chancel, although technically rude, are singular and unique. They have a degree of iconographic precision, through the rounded treatment of the volumes, a treatment that extends to all the capitals of the chancel.