![What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/1/590x/secondary/131090.jpg)
What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk
![What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/1/590x/461518_1.jpg)
What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk
![When Mount Etna erupted on April 11,2013, it created amazing smoke rings. Volcanic smoke rings are rare, but well-documented. | 風景, 自然, 空 When Mount Etna erupted on April 11,2013, it created amazing smoke rings. Volcanic smoke rings are rare, but well-documented. | 風景, 自然, 空](https://i.pinimg.com/originals/06/45/dc/0645dc64d5e60acd98747dd7c014952e.jpg)
When Mount Etna erupted on April 11,2013, it created amazing smoke rings. Volcanic smoke rings are rare, but well-documented. | 風景, 自然, 空
![What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk What does it mean? Mount Etna volcano spews perfectly formed SMOKE RING into the air | UK | News | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/1/590x/secondary/131094.jpg)