The aim is to introduce the results of the ethno-archaeological research started in 2007, during the second archaeological excavation in the Mora Cavorso cave at Jenne (RM). Lacking any records about the cave, research focused on historical memory of the site by interviewing the local population. These sources have been divided into three typologies:” direct”, “indirect” and “mythical”. Cross-checks with the archaeological data have shown various levels of reliability in the monitored sources. Cases of convergence are listed: the most interesting of these concerns the moving of the dry-stone wall which currently closes the cave. The oral information collected has played a central role in interpreting the archaeological data and confirms the utility of studying local memories to complete and enrich scientific sources.