Link: In Sicily, Mount Etna is blowing smoke rings

Mt. Etna smoke ring The BBC is reporting that Mount Etna is producing 200-meter wide rings of steam, which have never been observed in such detail before. The rings last up to 10 minutes, and appear to rise as far as a kilometer above the ground. See the article for more pictures, and scientific speculation on how they are formed.

(Image Credit: BBC)

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