Watch "vortex rings" above Mount Etna CNN 0 65 04.08 03:05 https://www.youtube.com/watch?v=J2Aj6Cv6l64 + 10 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 9 Watch "vortex rings" above Mount Etna