I managed to capture a waterfall rainbow in the light of the moon

I took this photo at Pistyll Rhaeadr, Wales UK. It is a long exposure which lets enough light into the lens to make it look almost like it is daytime until you notice the stars.. At the bottom of the waterfall you can make out a "Moonbow" a rainbow made by the light of the moon shining through the spray at the bottom of the waterfall.

thanks for looking, Gwion