Thanks guys. I don't know if (or whether) I should enter with a B&W version. It can be realistic in terms of B&W photography of course. I like it too, but I hope to make it more like an Ansel Adams image then.
Jo, you're right and actually I was worried by the same issue. maybe some local haze or indeed a drastic change in hue (in color that wouldn't be a problem).
I did another rock setup yesterday, but I'm not pleased with it yet, way too regular. I also introduced a faultline, but it get's kind of funny with this straight rock. Nor do I like the water's edge. But I have a brilliant idea now...