"The test of character is not persistence when you expect a light at the end of the tunnel. The true test is performance and persistence when you see no light coming".
James Arthur Ray
Under the railway line in Rotterdam, the tunnels are recognizable by the typical white tiles on the walls. When you go through such a tunnel it's like a big bathroom. The sound reflects well with a great echo. Children find it great to shout loudly in these tunnels. The tunnel on this picture is near the zoo. Perfect for echoing the sound of a monkey. Or any other animal of your choice. The person in this picture passed the tunnel in silence. Probably no inspiration to imitate an animal.
Canon EOS M3
Meike 35mm lens