Robotic excavator during ARCHE 2019 (<a rel="nofollow" class="external free" href="https://rsl.ethz.ch/robots-media/heap.html">https://rsl.ethz.ch/robots-media/heap.html</a>)
<a href="//commons.wikimedia.org/wiki/User:Auledas" title="User:Auledas">Auledas</a>
<span class="int-own-work" lang="en">Own work</span>