Megalithic tomb near Elstorf, painting by Jakob Gensler
<bdi><a href="https://en.wikipedia.org/wiki/en:Jacob_Gensler" class="extiw" title="w:en:Jacob Gensler"><span title="German painter (1808-1845)">Jacob Gensler</span></a>
</bdi>
1839<div style="display: none;">date QS:P571,+1839-00-00T00:00:00Z/9</div>
Ernst Sprockhoff: Atlas der Megalithgräber Deutschlands. Teil 3: Niedersachsen – Westfalen. Rudolf-Habelt Verlag, Bonn 1975, <a href="//commons.wikimedia.org/wiki/Special:BookSources/3-7749-1326-9" title="Special:BookSources/3-7749-1326-9">ISBN 3-7749-1326-9</a>, Taf. 15.