This is a brilliant shot! The concept is stunning!
I love the idea of an umbrella in the middle of a desert, and the shadow is perfectly placed. It's there and you can see it, yet it doesn't dominate the piece either. The way the umbrella blends into the washed-out orange of the desert is great, and the subtle changes in the color of the sand dunes is beautiful! Your angle combined with the different sizes and shapes of the sand dunes really provides a sense of depth and perception.