Urban geology analyses natural risks and promotes geoheritage in urban areas. In the
cities, characterized by a high cultural value, the hypogean artificial cavities, often present in
the downtown, offer a unique opportunity to show the geological substratum. Moreover,
these places could be a point of interest in urban trekking with the abiotic component of the
landscape as a topic (geotourism). To investigate these areas, rigorous bibliographic
research and a geomorphological assessment are the first steps, but, besides, non-invasive …