> http://maps.live.com/default.aspx?v=2&FORM=LMLTCC&cp=sk8z04gzhgvd&style=o&lvl=2&tilt...
>
> The thing which looks a bit like a petrol pump in the middle of the
> picture is a frame containing a pair of old bells, one of which bears
> the legend "I AM RUNG BY THE TIDES". Beneath the bells are poles
> attached to sluice gates. Does the bell sting ring, and how does/did
> it work? Why was this done at this rather obscure location?