Reconstruction of a Roman heavy-duty <a href="https://en.wikipedia.org/wiki/Crane_(machine)" class="extiw" title="en:Crane (machine)">crane</a> (pentaspastos) built according to a relief created around 200 AD. It is capable of lifting loads of up to five tons to a height of eight meters. It was demonstrated during a historic fest of the <a href="https://en.wikipedia.org/wiki/Bonn" class="extiw" title="en:Bonn">Bonn</a>-Castell district committee.
<a href="//commons.wikimedia.org/wiki/User:Iotatau" title="User:Iotatau">Jochen Teufel</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>