The IAVCEI warmly welcomes your participation to the 11th Conference Cities on Volcanoes (COV11), entitled “Volcanoes and Society: environment, health and hazards”, that will happen in Heraklion, in Crete island (Greece), from June 12 to June 17, 2022. Cities on Volcanoes Conferences are very special meetings, coordinated by the CaV Commission of IAVCEI, which offer a dedicated framework for exchanges between volcano experts, emergency managers and people living around active volcanoes, thereby promoting interactions between Volcanology and social Sciences. After 9 previous countries (Italy, New Zealand, USA, Ecuador, Japan, Spain, Mexico, Indonesia and Chile), Greece will host for the first time this important IAVCEI Conference. COV11 will also be the first major IAVCEI scientific meeting attended physically for nearly 3 years, owing to the COVID-19 pandemic. It will offer the hybrid opportunity of both in-person and online participation. Therefore, I strongly encourage worldwide volcanologists, emergency managers and stakeholders to participate as many as possible to this event. In addition to scientific Sessions on various topics, COV11’s program will include special Sessions dedicated to major volcanic eruptions and emergency crises that occurred in the world in the past two years. COV11 will also host the award ceremony honoring the nominee to the 2022 IAVCEI Award for Volcano Surveillance and Crisis Management.