Italy's Mount Etna has been putting on a show by blowing ... volcano leading to an unusual display of the so-called 'smoke rings'. The rings are made of gases and propelled by a circular vent ...
The “volcanic vortex rings” are a rare phenomenon generated by the combination of rapid gas release and vent shape. Photo: Giuseppe Di Stefano/Associated Press ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results
Feedback