Canal de Saint Quentin

with a tunnel built between 1801 and 1810.
https://en.wikipedia.org/wiki/Riqueval_Tunnel

more pictures here: http://aparisouailleurs.canalblog.com/archives/2018/08/25/36654677.html

[Maggiemae]

A very narrow canal - one boat's width! Interesting concrete work on the side! Will have to investigate!

[Maggiemae]

I find your photo in this address! Well done! Pity its all in French - I could translate it of course!

[J A Byrdlip]

Are the power lines (parallel wires in you photo) for the lights in the tunnel or to poser the boats?

[Jane Pittenger]

Nice composition

[Helene]

@maggiemae Ithank you for your comment, I put the link in English but it’s back to French. On the left you have « langages » Anglais »

[Helene]

@byrdlip the lines are for the electricity for the chains to track the boats in the tunnel. You can find information with the wikipedia link. On my computer it’s in English but on my Ipad in French. I don’t know why. Sorry but it’s too complicated to explain for me in English.

[Tricia O'Donnell]

wow