Sculpture <i>The Long Hum</i> (1969) by Theo Niermeijer, G. van Aemstelpark in Amsterdam/The Netherlands
<a href="//commons.wikimedia.org/wiki/User:Gerardus" title="User:Gerardus">Gerardus</a>
2011-07-03
<span class="int-own-work" lang="en">Own work</span>