Jad, I am assuming your comment was sarcasm, but its hard to tell on a forum.
No no, Jad stands by what he shouted. I'm sure of it.
He has a point about the speculars adding a wetness and atmosphere to it. I still think they're too distracting as they were, though. Maybe you could go for something a little in between my edit and the ULTRA SPECULARS. Worth the experiment.
Hmm, lowering the saturation like that washed it out, which is the opposite of what I imagine Super Atmospheric Cave (it's name to me now

) to thrive on.
You'll notice in my edit, I generally increased the saturation of all the tones... probably to an extreme degree. But extremes are good at finding the limits. What I mainly did was tone down the brights and fiddled a lot with the values of all the other tones to compensate for that.
I think a step in the direction of high saturation, deep indigo shadows, cyan midtones and (within reason) sharp speculars are the way to go in bringing out these rocks atmosphere.