Geophysical investigations to search for the remains of sister Chiara Isabella D'Amato

This paper reports the results of the integrated geophysical surveys performed inside the Monastery of St Chiara in Nardó in southern Italy. Ground-penetrating radar (GPR) and electrical resistivity tomography (ERT) investigations were carried out to find the tomb of Sister Chiara D'Amato, whose location has been lost over the centuries. Sister Chiara Isabella D'Amato was a charismatic and holy figure. She died in 1693. She was buried inside the monastery but her body has never been found. The data acquisition was performed along with a series of closely spaced lines for GPR and using a non-standard array for ERT. Data were processed and visualised as two-dimensional vertical sections and depth slices or three-dimensional volumes (GPR and ERT) to allow an integrated interpretation of the geophysical results. The analysis of the geophysical data sets revealed a series of anomalies that could be ascribed possible archaeological structures, probably related to the earliest ages of the sacred building as well as other anomalies (bedrock, fractures) of presumable natural origin. In particular, one geophysical anomaly was suspected of being connected to burial and consequently further investigated with the use of a video endoscope. The results reveal the presence of a void but it has not yet been clarified whether it is the burial of Sister Chiara or not as it is awaiting the excavation.