3D high resolution GPR survey to help the reconstruction of the archaeological stratigraphy of Lecce (Italy)

3D high resolution Ground Penetrating Radar (GPR) survey was performed in the Crypt of the Duomo of Lecce (South Italy), built in 1114. The GPR data revealed us a stratified subsoil in which there is a distribution, with the depth, of several “remains” referable to different epochs. Here we present and discuss the experimental evidences, comparing them with the historical-archaeological documentation. We think that they constitute a valid contribution to the knowledge of the ancient stratigraphy, as well as of the Roman history of Lecce, especially because of many suppositions have not yet found a confirmation.