carr mill dam viaduct in st helens, merseyside

carr mill dam viaduct st helens merseyside winter architecture autumn aves avian beautiful biodiversity bird bridge canary wharf city crested cristatus europe fauna forest grass great greatcrested grebe green landmark landscape natural nature old outdoor park podiceps rural sky spring summer tourism travel tree view water wildlife situated north town centre a571 it countys largest body inland offers picturesque lakeside trails