HI John, At first look , my first thought was HDR or fill flash. I think you need something to bring out the details in the rocks. From a composition point , change the angle. maybe down on the ground shooting up( but then you have to watch the sky). It just means you have to go back and shoot it again. From a processing point,maybe a selection of just the rock face to brighten just that part without changing the balance of the image. Adjustment brush in Lightroom or Quick Select and mask on a layer if in Photoshop.