Short tunnel in <a href="https://en.wikipedia.org/wiki/Ribeira_Brava,_Madeira" class="extiw" title="w:Ribeira Brava, Madeira">Ribeira Brava</a> connecting two parts of port, south coast of <a href="https://en.wikipedia.org/wiki/Madeira" class="extiw" title="en:Madeira">Madeira</a> island
<a href="//commons.wikimedia.org/wiki/User:Karelj" title="User:Karelj">Karelj</a>
<span class="int-own-work" lang="en">Own work</span>