Bill,
I find these sorts of images--particularly the first--very hard to deal with, and I have junked most of mine, so take this with a very big grain of salt. You presumably want the misty, moody atmosphere, but at the same time, the image has limited tonal range and contrast and comes out looking somewhat drab as a result. If you do any of the standard things to compensate in the usual RGB mode, you will increase saturation, which would be a very different image.
So, for what it is worth, I tried three changes, all using luminosity blending mode to avoid increasing saturation:
1. I moved in the black and white points to get more total range
2. I dodged the rocks to bring out shadow detail.
3. I used a curve to increase midtone contrast, but I anchored the bottom point on the diagonal and only raised a brighter area, to avoid re-darkening the rocks.
Would something in this direction help?