Sinkhole phenomena at San Basile, Northern Calabria

Within the framework of a regional study, recently performed to implement a data base of the sinkholes in plain areas in Calabria, n.5 cases have been recognised in the territory of San Basile (Northern Calabria) at "Piano dell'Acqua". The sinkholes are located in a hilly setting, in which the main landform is a slight valley draining toward the east. The area is characterized by Pliocene conglomerate and sand, likely dislocated by tectonic lines. The sinkholes show a variable freshness appearance. They are limited in size, with maximum diameter of 10 m, and maximum depth of 2.5 m; two of them are elongated, whilst the remaining three are circular.