Mount Etna blows spectacular smoke rings into the skyapnews.com Mount Etna in Sicily, the largest active volcano in Europe, has been blowing spectacular “smoke rings” into the sky since Wednesday.
Post
Mount Etna, Europe’s largest volcano, puffs giant ‘smoke rings’ into skywww.washingtonpost.com “The rings look pretty much like the ‘smoke rings’ produced by an able smoker,” a volcanologist said of the phenomenon at Mount Etna.