Italian vulcanologist, Daniele Lodato, checks the eruption frequency from Mount Etna, Europe's largest active volcano, as plumes of smoke spew from one of its openings, near Nicolosi, Sicily, Tuesday, 24 July, 2001. Ashes from the restive Mount Etna continue to rain down and the nearby airport of Catania has had to close several times because of the black volcanic ash and dust on the runway. Photo: AP Photo/Fabrizio Villa