Curved parallel lines in tunnel
<a href="//commons.wikimedia.org/wiki/User:YLSS" title="User:YLSS">YLSS</a> and <a href="//commons.wikimedia.org/wiki/User:Mahir256" title="User:Mahir256">mahir256</a>
2016-07-24
<a href="//commons.wikimedia.org/wiki/File:BSicon_tvSTRrg%2Brf-.svg" title="File:BSicon tvSTRrg+rf-.svg">BSicon tvSTRrg+rf-.svg</a>