COV11 In Heraklion: Cities on Volcanoes 11 Summit Features World’s Top Experts 4 years ago The Cities on Volcanoes 11 Conference is in Heraklion this week featuring some of the world's foremost volcanologists. 11th Cities on Volcanoes Conference Rescheduled Over COVID-19 6 years ago IAVCEI and the local organizing committee announce the postponement of the 11th Cities on Volcanoes (COV11) events.