The collaboration between the National Institute of Geophysics and Volcanology (INGV) and the Speleological Group CAI Fabriano (GSF) was established with the aim of clarifying from a physical point of view-modeling certain phenomena observed in karst cavities of the complex the Frasassi caves. The surveying of the sections explored by the cavers team, including a myriad of tunnels and caves show, mainly two tunnel systems: the Grotta Grande del Vento and the Galleria del Buco Cattivo separated by a apparently compact limestone of considerable thickness of about 120 m. This paper will present the experiments conducted between the two tunnels in order to predict the presence of additional cavities, or whether it is a compact thick, variously fractured or porous. The multi-disciplinary...