Emmanuel Reynard is a geographer and Professor of Physical Geography at the University of Lausanne (Switzerland). He chaired the working group on Geomorphosites of the International Association of Geomorphologists (IAG) from 2001 to 2013, and has been president of the Working Group on Geosites of the Swiss Academy of Sciences since 2006. He is a member of the Executive Committee of IAG and Honorary Professor of the University of Bucharest (Romania). He develops research on geomorphological heritage and geotourism, water management in mountain areas, and geohistorical studies of landscape changes.

José Brilha is a geologist and Professor at the University of Minho (Portugal). He is President of ProGEO (The European Association for the Conservation of the Geological Heritage), member of the UNESCO Global Geopark Evaluation Team and the IUCN World Commission on Protected Areas and its Geoheritage Specialist Group. He was founder and Editor-in-Chief of the journal Geoheritage, member of the Geoheritage Task Group of IUGS, of the Portuguese Committee for IGCP and of the Portuguese Geoparks Forum. Currently, he develops applied research on geodiversity, geoconservation, and geoparks.