The sky lacks interest, and we are unfortunately trained to require clouds. Whether or not it really needs visual interest to be formally well composed is beside the point, the trope is so ingrained that clouds are mandatory. So, if you're there on a cloudless day, you've typically got a problem.
There's no visual center, the eye not led anywhere, it seems to be just a bunch of (admittedly attractive) rocks. The light's not bad, even though the image feels a bit flat. I am pretty sure the flatness is actually compositional, not due to the light, even though my first reaction was 'the light is terrible'. The light's quite nice, in fact.
It feels like you were maybe going for a negative space/positive space thing, which isn't a bad idea given the cloudless sky, but I think you needed to do something else. Maybe more sky (negative space), or try for some sort of graphical effect (a yin/yang look of sky against ground, or some similar "shape-based" approach), or just get a lot closer so we have a single strong rock or formation to get a grip on?