Integrated GPR and ERT Surveys for the Investigation of the External Sectors of the Castle of Melfi (Potenza, Italy)

The Castle of Melfi is placed on a hilltop overlooking the modern town and it includes many buildings that have been modified expanded over time. Its Norman-era core was probably built between end 11th start 12th century top an earlier Byzantine castrum; enlarged during reign Frederick II additional alterations were undertaken reigns Angevin Aragonese. Integrated ground-penetrating radar (GPR) electrical resistivity tomography (ERT) surveys carried out inside two courtyards westernmost part castle, Cortile degli Armigeri del Mortorio, in external eastern wall area order to identify ancient buried structures through different methods investigation compare results.