Our Volcano guide Marco Tomasello guest of the fourth episode of the documentary “dans le syllage d’Ulisse” for the French TV Arte . The writer and adventurer Sylvain Tesson retraces the journey of Ulysses during the Odyssey , in this episode the writer retraces the adventures on the island of his Hélios : Sicily and is greeted by an Etna that shows itself in all its splendour.