Mt.Etna‘s Southeast Crater has begun emitting countless graceful vapor rings (“volcanic vortex rings”), a phenomenon never seen like this before. Someone said “maybe because we receive so much bad news lately, Etna has decided to do something simply beautiful”.
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This is so cool!
Extraordinary! Thanks.
One puff meant “Attention”; two meant “All is well”; and three puffs of smoke signified “danger, trouble, or need help!”