Zeichnungen, Lavamalerei
<bdi><a href="https://en.wikipedia.org/wiki/en:Jacques_Ignace_Hittorff" class="extiw" title="w:en:Jacques Ignace Hittorff"><span title="French architect (1792-1867)">Jacques Ignace Hittorff</span></a>
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Photography 2017-07-24 by <a href="//commons.wikimedia.org/wiki/User:Raymond" title="User:Raymond">Raimond Spekking</a>