The tombstone of <a href="https://de.wikipedia.org/wiki/Karl_K%C3%B6llner" class="extiw" title="de:Karl Köllner">Karl Köllner</a>, a German social education worker and pietist, on the Old Cemetery in <a href="https://en.wikipedia.org/wiki/Korntal-M%C3%BCnchingen" class="extiw" title="en:Korntal-Münchingen">Korntal</a> in Southern Germany.
<a href="//commons.wikimedia.org/wiki/User:Harke" title="User:Harke">Harke</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>