Geomorphological and structural characterization of the ‘Canale di Pirro’ polje, Apulia (Southern Italy)

In this work, we present a geomorphological map of the ‘Canale di Pirro’ polje, located in the central part of Apulia region, Southern Italy, among the most interesting karst landforms in the Mediterranean Basin. This area is characterized by a remarkable underground system of caves, where the so-called ‘Inghiottitoio di Masseria Rotolo’ reaches a depth of 324 m, thus being the deepest known cave in Apulia. The polje is bounded on both sides by tectonically controlled ridges, showing an overall length of some 12 km. The map of the area is produced starting from the interpretation of aerial photographs, the integration of the digital elevation model analysis and field surveys, in order to obtain a correct distribution of landforms and fluvial processes. Furthermore, karst depressions, conical hills, erosional gullies, alluvial fans and tectonic structures have been also identified and reported in the map.