400 year old Jesuit smelter near Pozos, Guanajuato, Mexico.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Jesuit_smelter.jpg" title="File:Jesuit smelter.jpg">Jesuit_smelter.jpg</a>: Tomas Castelazo</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Ggia" title="User:Ggia">Ggia</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Ggia" title="User talk:Ggia"><span class="signature-talk">talk</span></a>)</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Jesuit_smelter.jpg" title="File:Jesuit smelter.jpg">Jesuit_smelter.jpg</a></li></ul>