I agree about the simplicity of the image. The exposure is basically dead on and just holds in places in the sky. The composition has flow of line and rhythm with the main rock both acting as a (the) main subject and additionally acts as an anchor holding the image with some weight. I like magenta/purples/lavenders of the image. As Jim says it has the simplicity of earth, sky and water. I do not like this image as well as you, but I will have to do some investigation to find out more about Joe and find images that I may like better.