SUMMARY
This paper contains the results of a series of geophysical investigations carried out on the largest debris flow tohave taken place in Tavernole, S. Felice a Cancello (Caserta, Southern Italy). The landslide occurred in concurrencewith other catastrophic events in the Sarno Mountains in May 1998. This research project is part of a seriesof geological, geomorphological and geotechnical studies whose purpose is to improve the knowledge ofthis type of phenomenon. The project also tested and compared various survey methods in the sample area of S.Felice a Cancello. Geophysical surveying allowed us to collect information regarding the physical features andthickness of the materials affected by landslide phenomena and to verify the applicability and effectiveness ofthe various indirect surveying methods adopted. The preliminary results of the study enabled us to generate a seriesof suggestions which could prove useful in formulating the correct approach to this type of problem to beadopted in ordinary professional practice. These indications concerned the type of geophysical surveying to beconducted and, where applicable, the means of implementation. In general, seismic refraction was found to bethe best technique for collecting information on the area studied.