Well a part of the problem is probably due to the varying sizes of similar things so that they aren't on the same scale as dictated by the client. So the huge steps are on a different scale from the statues with staffs and then the distant figure on the right is actually larger than those figures but is at a distance where it's about the same size on the page as those statues. Then the rubble/monuments are supposed to vary in size from being for tiny to large figures. If this were an above ground image I could use atmospheric perspective to lighten and add blue to the background to sell the scale but with it being underground it would make more sense to go to black but I didn't want it to be an even darker image. I believe all of those aspects combined could create a disconcerting or confusing effect.