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Volcano blows spectacular smoke ring. A rare phenomenon, where a visible vortex ring of steam and gas is expelled from a volcanic vent. Under special conditions, gas and steam expelled from a vent can form gas rings.
It probably requires a particular geolometric configuration of a circular vent exit, as well as expulsion of gas in individual puffs with just the right velocity. Read more: www.cosmostv.org...
Originally posted by Arrrr
reply to post by Imtor
LOL I was about to post the same thing. Mt. Etna's nickname should be Mt. Tokin after this video! Shortly thereafter, Mt. Etna took a nap. Holy smoke ring Batman.edit on 16-8-2011 by Arrrr because: (no reason given)