I took this (clickable) photograph earlier today. It is of the Upper Derwent Reservoir ten miles west of Sheffield. Up ahead you can see Howden Dam which was constructed a hundred years ago. The men who built it lived in a temporary village called "Tin Town". It housed almost a thousand people and had its own church, school, grocery shop, pub and hospital. Today you'd need to be an archaeologist to recognise that there was once a village there. It must have been a hellish place to live in wintertime in spite of the natural beauty of the area.
During the second world war the RAF tested Barnes Wallis's bouncing bombs in this valley before attacking important dams in Germany. Here's another picture I took today:-