tunnel end, to corner 2 from corner 4
<ul><li><a href="//commons.wikimedia.org/wiki/File:BSicon_utSTR3%2B1a.svg" title="File:BSicon utSTR3+1a.svg">BSicon_utSTR3+1a.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Useddenim" title="User:Useddenim">Useddenim</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Tuvalkin" title="User talk:Tuvalkin"><span class="signature-talk">talk</span></a>)</li></ul>
2011-09-27 19:51
<ul><li><a href="//commons.wikimedia.org/wiki/File:BSicon_utSTR3%2B1a.svg" title="File:BSicon utSTR3+1a.svg">BSicon_utSTR3+1a.svg</a></li></ul>