Love this Geof.
Great combination of colours and textures. The composition with the horseshoe curve of the rocks works brilliantly - for me that shape somehow seems to hold it all together in place of there being a single focal point. And whatever PP you've applied seems to have given it a sort of luminance almost like a watercolour.
I can see the point about the dark patch at the top, but it really doesn't bother me at all. Personally I think you'd lose some of the charm of the image by cropping the top and losing the horseshoe shape of the rocks.