![](http://www.alamy.com/thumbs/6/6F7B8FAD-901C-4AE5-A5D9-D5EE24455F73/2JP15YK.jpg)
volcanologists on the slope of the volcano study samples of minerals against the backdrop of smoking sulfur fumaroles
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Photo credit: © Evgeny Haritonov / Alamy / Afripics
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