BS2 track corner <b>2</b>st &amp; <b>4</b>th quadrant
<a href="//commons.wikimedia.org/wiki/User:Lantus" title="User:Lantus">Lantus</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Lantus" title="User talk:Lantus">Lantus</a>)
2020-02-15
<span class="int-own-work" lang="en">Own work</span>