Directional well under city - diagram
<ul><li><a href="//commons.wikimedia.org/wiki/File:Directional_well_under_city.png" title="File:Directional well under city.png">Directional_well_under_city.png</a>: <a href="//commons.wikimedia.org/wiki/User:SebaeL" title="User:SebaeL">SebaeL</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Malyszkz" title="User:Malyszkz">Malyszkz</a></li></ul>
CC BY-SA 3.0
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Directional_well_under_city.png" title="File:Directional well under city.png">Directional well under city.png</a>: <a href="//commons.wikimedia.org/wiki/File:Directional_well_under_city.png" class="image"><img alt="Directional well under city.png" src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Directional_well_under_city.png/50px-Directional_well_under_city.png" decoding="async" width="50" height="24" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Directional_well_under_city.png/75px-Directional_well_under_city.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Directional_well_under_city.png/100px-Directional_well_under_city.png 2x" data-file-width="3441" data-file-height="1654"></a><br>