For Flash of Red - last day for circles.
I have no idea what this is. It is near and old pump outside the children's play area at the country park. Is it a spray or a microphone/speaker? I am leaning towards spray but it is on top of an upright pole and would spray out at a right angle which seems odd.
Anyway I thought it fitted perfectly with the theme of circles - inside the big circle are hundreds of tiny circles.
