Airborne LiDAR application to karstic areas: the example of Trieste province (north-eastern Italy) from prehistoric sites to Roman forts

► We report the results of airborne LiDAR application to Trieste Karst (Italy). ► We produced a Digital Terrain Model of the area by free open source softwares. ► LiDAR derived images revealed structures ranging from prehistory to Roman time. ► We describe a Roman fort, probably built during the 3rd Istrian war (178-177 BC). ► LiDAR remote sensing is a revolution in archaeological mapping of karstic areas.