Wonderful shot. I especially like the different textures to the clouds - some look thin and fluffy, while others have a bit more solidity to them. It gives a nice sense of variety to the composition. Interesting formations too, particularly the central ones that curve and flow smoothy upwards. It looks as though they're expanding outwards, thus giving a sense of motion as well.
The patches of gold and yellow to the right offer a really beautiful contrast to the mostly bue sky and against the dark mountains directly below. It makes that section stand out that much more. The lack of detail in the landscape invites a closer inspection of the sky instead of wasting time wondering what's happening on the ground. It's a really lovely shot all around. Great capture!