Virtual Outcrops Building in Extreme Logistic Conditions for Data Collection, Geological Mapping, and Teaching: The Santorini's Caldera Case Study, Greece. - Fabio Luca Bonali; Luca Fallati; Varvara Antoniou; Kyriaki Drymoni; Federico Pasquaré Mariotto; Noemi Corti; Alessandro Tibaldi; Agust Gudmundsson; Paraskevi Nomikou (GISTAM, 2021)