I only saw this today.
I had wanted to express that this was a ruin of a watermill sawing wood, that at a later date had been used without the waterwheel. I don't quite know how to tag this correctly. However the sawmill tag should not get out of use.

The mooring tag is good as 'no' I suppose, mooring here is definitely not advisable (as the water is very wild if it is calm), no sign though.