Volcanic vortex rings: Visitors to Mount Etna enjoy smoke rings
In southern Italy, Mount Etna is dazzling visitors with a display of volcanic vortex rings. Scientists say recent activity created the right conditions for the rare phenomenon. Al Jazeera’s Barbara Angopa reports. Subscribe to our channel http://bit.ly/AJSubscribe Follow us on Twitter https://twitter.com/AJEnglish Find us on Facebook https://www.facebook.com/aljazeera Check our website: https://www.aljazeera.com/ Check out our Instagram…