 It was discovered that they were structurally sound, but they revealed some interesting features that pushed the archaeologist to plan a systematic research in the church.Work started in 1999 and lasted until 2002 and foreseen the excavation of the total surface of the church and its restoration.A European project was launched that aimed at the complete study of the building and at the reconstruction of its original 10th-century appearance by following a rigid scientifically supervised procedure.