Stacked blocks of geofoam at a construction site in <a href="https://sv.wikipedia.org/wiki/Rix%C3%B6" class="extiw" title="sv:Rixö">Rixö</a> granite quarry, Sweden.
<a href="//commons.wikimedia.org/wiki/User:W.carter" title="User:W.carter">W.carter</a>
<span class="int-own-work" lang="en">Own work</span>