I had this idea in my head for a while, but when in a randomly roleplaying session, we created a valley with a lake in the centre, I just had to try to create it. I wish the rainbow followed the edge of the lake rather than stay circular, that's how I see it in my mind. :/
This is a photoshop(duh) of one of my most favourite pictures I ever took. It's up the tabletop mountains in Newfoundland. The original almost looked... painted in a way, because of the way the water looked. This picture looks much more detailed from whatever I did, I was just playing around.