After four years of collaboration, under the co-supervision of Prof. Snježana Mihalić Arbanas and Dr. Mauro Rossi, Dr Marko Sinčić got the PhD degree at the Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb on 23 April 2025. The thesis addressed relevant issues for the zonation of large scale landslide susceptibility in the area of Zagreb. The research involved a group of Croatian landslide experts: Prof. Sanja Bernat Gazibara and Prof. Martin Krkač from University of Zagreb and Prof. Petra Jagodnik from University of Rijeka. In the name of future collaborations, we congratulate with Dr Marko Sinčić for the well deserved achievemnet.