An Archimedes Screw - Censored, naturally

Bingley. W. Yorks. UK

I've been trying to get a good image (this one being mediocre) of this fascinating device for a while. Small children really love it and it's fascinating to watch them at play. As previously discussed on here, taking photos of children is a tricky area these days as is just looking at them. I did ask if I could take this and there was no objection at all.

Anyway, the God of Photography, as if to teach me a lesson, stepped in and deleted the identity of all six people in this shot.