It´s always nice to have a little smoke when one is on a volcano. Let´s not ruin a good photo caption with some boring facts such as this being steam instead of smoke. Anyway, this photo is taken on top of the volcano Hekla.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/61732101@N00">Borkur Sigurbjornsson</a> from Barcelona
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/61732101@N00/362839380/">Smoking Volcano</a>