Old part (1853-1969) of the Marne-Rhine Canal near Arzviller, There were 17 sluices within 4 kilometers. This is sluice number 11.
<a href="//commons.wikimedia.org/wiki/User:JLange01" title="User:JLange01">Jürgen Lange</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>