The chapel has a semi-circular apse at the eastern end which is built of carefully laid stonework. The choir is similarly well constructed except high up where rubble masonry is used. The two buttresses at the western end of the choir show evidence of having been modified. The walls of the nave, which now lacks a roof, are built with irregular blocks of stone. The western door, which is surmounted by a niche and an oculus, appear to date from the 17th century. The chapel must have once had a graveyard as excavations carried out in 1989 in an area to the southeast unearthed 22 burials dating from the High Middle Ages. The oldest parts of the chapel are in the early Romanesque style and probably date from the 11th century. The choir was reconstructed in the 12th century and then in the 17th century the building was restored and the murals added.