Mt. Etna blowing a smoke ring. | Mount Etna blowing a smoke ring. Etna is an active volcano located on the east coast of Sicily. It is one of the world's most
![severe-weather.EU auf Twitter: „Another view of today's smoke ring over Etna volcano, Sicily. Photo: geraldf2273 https://t.co/Q7VE7lwNlW“ / Twitter severe-weather.EU auf Twitter: „Another view of today's smoke ring over Etna volcano, Sicily. Photo: geraldf2273 https://t.co/Q7VE7lwNlW“ / Twitter](https://pbs.twimg.com/media/CwM_Mi3XEAE7dEi.jpg)
severe-weather.EU auf Twitter: „Another view of today's smoke ring over Etna volcano, Sicily. Photo: geraldf2273 https://t.co/Q7VE7lwNlW“ / Twitter
![Mount Etna puffs out perfectly formed 50-METRE smoke rings into the sky off coast of Sicily | Daily Mail Online Mount Etna puffs out perfectly formed 50-METRE smoke rings into the sky off coast of Sicily | Daily Mail Online](https://i.dailymail.co.uk/i/pix/scaled/2014/02/24/article-2566812-1BCBB33000000578-359_636x382.jpg)