vurtual:

Rainbow lakes in Greenland (by Bandit600N)

“I saw the ice shelf drifting on the coast and thought I take some pictures and after fying further over greenland I notices some lakes looking rainbow like in my camera. It’s the circular polar filter I had on my lens. When turing it you move the colors and it just look so great.
It seems the sunlight gets reflected and the wavelength are split into the polarized field and when turning the filter you can move the colors through the image.”