good point Dominic. Goms, yes, rather disable the ambient occlusion here or at least decrease strongly.
The rock surface coloring is looking really good now. Next step of improvement for me would be on the displacements. For now, the whole summit structure looks like a frozen liquid.... hmm, hard to describe. It all kind of "flows" from top to bottom, where I would certainly expect a few outcrops and rocks, more edgy and cracked. Do you know what I mean?
If you can get that going convincingly, I will be deeply impressed and instantaneously want to know from you how it's done

Cheers,
Frank