Six and a half miles from here, in the countryside is Knypersley Reservoir. It supplies the local canals with water (apparently Staffordshire has the greatest mileage of canals of all the counties of Britain).
The walk round the Reservoir was up and down hill. We walked up past a tower in the fading daylight, then on up a rough path to a waterfall, more of a small weir. Back along it and out of the shadows of the trees, then along the footpath and out onto the road that crosses the Reservoir and back up to the car park.
We walked for about two miles, up and down. Good exercise, although I was a little nervous of the uneven surfaces.