I've always believed this to be a sluice, associated with the former smelter further downstream. There was a large pond behind this opening, which was completely silted up when I used to play in that area as a child. The remains of what appear to be the sluice gate mechanism still exist above this opening, although the pond itself was buried when the bypass was constructed.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
