Roman <a href="//commons.wikimedia.org/wiki/Quarry" title="Quarry">quarry</a> near <a href="//commons.wikimedia.org/wiki/Bad_D%C3%BCrkheim" title="Bad Dürkheim">Bad Dürkheim</a> (Germany).
<a href="//commons.wikimedia.org/wiki/User:DKrieger" title="User:DKrieger">Dietrich Krieger</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>