In this picture made available Saturday, Dec. 5, 2015, people stop their cars to look at Mt. Etna erupting, near Catania, Italy, late Friday, Dec. 4, 2015. Europe's most active volcano, at 3,350 meters (10,990 feet), erupts frequently without posing major threats to the inhabited areas apart from the occasional closure of nearby airports due to the intense ash clouds. (AP Photo/Salvatore Allegra)
In this picture made available Saturday, Dec. 5, 2015, people stop their cars to look at Mt. Etna erupting, near Catania, Italy, late Friday, Dec. 4, 2015. Europe’s most active volcano, at 3,350 meters (10,990 feet), erupts frequently without posing major threats to the inhabited areas apart from the occasional closure of nearby airports due to the intense ash clouds. (AP Photo/Salvatore Allegra)

Η Αίτνα, το πιο ενεργό ηφαίστειο της Ευρώπης, στα 3.350 μέτρα ξεσπά συχνά χωρίς να παρουσιάζει μείζονες απειλές για την ασφάλεια των κατοίκων της Κατάνιας.

Τις προηγούμενες μέρες σημειώνονται σημαντικές εκρήξεις σε έναν από τους κρατήρες του ηφαιστείου, που βρίσκεται στις ανατολικές ακτές της Σικελίας.

Από τα σπλάχνα της γης εκτινάσσονται σύννεφα ηφαιστειακής σκόνης ενώ παρουσιάζεται και ένα σπάνιο φαινόμενο. Ηφαιστειακές αστραπές συνοδεύεουν το ξέσπασμα της φύσης, φαινόμενο που ονομάζεται «βρώμικη καταιγίδα» (dirty thunderstorm) και συνδέεται με μεγάλες ηφαιστειακές εκρήξεις.

Η σύγκρουση των σωματιδίων ηφαιστειακής τέφρας προκαλεί ηλεκτρικά φορτία σε ένα σόου αστραπών που εντυπωσιάζει

In this picture made available Saturday, Dec. 5, 2015, a cloud of smoke rises above Mt. Etna volcano during a second eruption in a week, near Catania, Italy, late Friday, Dec. 4, 2015. Europe's most active volcano, at 3,350 meters (10,990 feet), erupts frequently without posing major threats to the inhabited areas apart from the occasional closure of nearby airports due to the intense ash clouds. (AP Photo/Salvatore Allegra)
In this picture made available Saturday, Dec. 5, 2015, a cloud of smoke rises above Mt. Etna volcano during a second eruption in a week, near Catania, Italy, late Friday, Dec. 4, 2015. Europe’s most active volcano, at 3,350 meters (10,990 feet), erupts frequently without posing major threats to the inhabited areas apart from the occasional closure of nearby airports due to the intense ash clouds. (AP Photo/Salvatore Allegra)