MailOnline-by Sarah Griffiths Nov 15,2013
Volatile volcano Mount Etna has been blowing perfect 'smoke' rings into Sicily's blue skies.
The volcano erupted violently on November 11 and since then has produced regular explosions, as well as hundreds of perfect vortex rings.
While theories abound, scientists are not entirely sure why the volcano is able to blow the circular puffs of steam - although some think a circular vent could be the cause.
You are invited to read more: http://www.dailymail.co.uk/sciencetech/article-2507799/Shes-smoking-Mount-Etna-puffs-dozens-rings-measuring-hundreds-feet-spews-molten-lava.html
