I would like to point you to another thread where I uploaded my own photograph from a vantage point close to this image’s: “The Quiraing, Skye, Lightroom and darktable”.
@black_daveth, I am wondering why you treated your photo in a way that makes a foggy sky out of what looks partly blue in all the other interpretations. And for some reason when I open the NEF in dt using the xmp provided it does not look like your edit but it does show the clouds.