Tunnel portal at the edge of the icon, for use when a surface line has a terminal station in a tunnel.
<ul><li><a href="//commons.wikimedia.org/wiki/File:BSicon_PORTALa.svg" title="File:BSicon PORTALa.svg">BSicon PORTALa.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Benhen1997" title="User:Benhen1997">Benhen1997</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:BSicon_tSTRa@gq.svg" title="File:BSicon tSTRa@gq.svg">BSicon tSTRa@gq.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:BSicon_lTUNNELq.svg" title="File:BSicon lTUNNELq.svg">BSicon lTUNNELq.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Tuvalkin" title="User:Tuvalkin">Tuvalkin</a></li></ul>
2018-09-11
Own work based on: <a href="//commons.wikimedia.org/wiki/File:BSicon_PORTALa.svg" title="File:BSicon PORTALa.svg">BSicon PORTALa.svg</a>: <a href="//commons.wikimedia.org/wiki/File:BSicon_PORTALa.svg" class="image"><img alt="BSicon PORTALa.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/BSicon_PORTALa.svg/48px-BSicon_PORTALa.svg.png" decoding="async" width="48" height="48" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/BSicon_PORTALa.svg/72px-BSicon_PORTALa.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/BSicon_PORTALa.svg/96px-BSicon_PORTALa.svg.png 2x" data-file-width="500" data-file-height="500"></a>, <a href="//commons.wikimedia.org/wiki/File:BSicon_tSTRa@gq.svg" title="File:BSicon tSTRa@gq.svg">BSicon tSTRa@gq.svg</a>: <a href="//commons.wikimedia.org/wiki/File:BSicon_tSTRa@gq.svg" class="image"><img alt="BSicon tSTRa@gq.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BSicon_tSTRa%40gq.svg/48px-BSicon_tSTRa%40gq.svg.png" decoding="async" width="48" height="48" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BSicon_tSTRa%40gq.svg/72px-BSicon_tSTRa%40gq.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/BSicon_tSTRa%40gq.svg/96px-BSicon_tSTRa%40gq.svg.png 2x" data-file-width="500" data-file-height="500"></a>  and <a href="//commons.wikimedia.org/wiki/File:BSicon_lTUNNELq.svg" title="File:BSicon lTUNNELq.svg">BSicon lTUNNELq.svg</a>: <a href="//commons.wikimedia.org/wiki/File:BSicon_lTUNNELq.svg" class="image"><img alt="BSicon lTUNNELq.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/BSicon_lTUNNELq.svg/48px-BSicon_lTUNNELq.svg.png" decoding="async" width="48" height="48" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/BSicon_lTUNNELq.svg/72px-BSicon_lTUNNELq.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/BSicon_lTUNNELq.svg/96px-BSicon_lTUNNELq.svg.png 2x" data-file-width="500" data-file-height="500"></a>