Check out spectacular geologic images from Steph at this link: http://wordwomanpartialellipsisofthesun.blogspot.com/2017/03/smoking-smoke-rings-mount-etna-sicily.html I especially appreciate the Mount Etna photos because I visited there when the Smith College Alumnae Chorus toured Sicily. Be sure to check out the bonus images in the first comment from Steph, aka Word Woman. Enjoy!
Joanne Corey 