<a href="https://en.wikipedia.org/wiki/Manhole_cover" class="extiw" title="en:Manhole cover">en:Manhole cover</a> in <a href="https://en.wikipedia.org/wiki/Earls_Colne" class="extiw" title="en:Earls Colne">en:Earls Colne</a> in sidewalk, unround
<a href="//commons.wikimedia.org/wiki/User:JohannesJ" title="User:JohannesJ">JohannesJ</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>