I'd expect a clarity / structure type adjustment to work very well on any limestone pavement, but there's the danger of the cloud haloes. So assuming you're using Lightroom or Adobe Camera Raw, a grad filter with a +ve clarity value would be pulled up from the base of the frame. The main issue I see here is balance - the limestone is about the same light tone as the sky so the eye is drawn equally to both, not to the one that's really interesting. That's why I said darken the sky during the conversion - the eye will pushed down onto the landscape. I assume it's around Malham?