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  Mount Etna: The anatomy of a volcano - D.K. Chester, A.M. Duncan, J.E. Guest, C. Kilburn - Google Books

  https://books.google.de/books?id=KKK-BwAAQBAJ

  Since the Second World War interest in the active by Italian geophysicists; studies of ground deform volcano Mount Etna, in Sicily, has been steadily ation by British and Italian groups; measurements increasing. This interest has not been restricted of…

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  Category:Volcanic landforms – Wikimedia Commons

  https://commons.wikimedia.org/wiki/Category:Volcanic_landforms?uselang=de

  Keine Beschreibung vorhanden.

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