Anthropogenic sinkholes in the territory of the city of Naples (Southern Italy)

About 190 anthropogenic sinkholes occurred within the territory of the city of Naples (Southern Italy) between 1915 and 2010.In the study area, the genesis of sinkholes can be ascribed to two major factors, often strongly interacting with each other: the existence of a complex network of underground man-made cavities, and the inadequacy of the sewage disposal system.Rainfall has been identified as the main triggering factor combined with anthropogenic activity. Based on such predisposing factors, in addition to the geological setting, a susceptibility map of the territory has been realised.

► Approximately 190 anthropogenic sinkholes occurred in Naples between 1915 and 2010.
► Underground cavities and the inadequacy of the sewage system act as predisposing factors.
► Rainfall has been identified as the main triggering factor.
► The geological setting plays an indirect role in controlling the phenomenon.
► Based on predisposing factors and geological setting, a susceptibility map has been realised.