Driftwood
The desert is a strange place. You often find things in deserts that obviously do not belong there. In this case I found a dried up piece of driftwood on barren rocks far away from any stream. You have to wonder what amount of water it took to move it to the place it was lying. Also, there are not too many trees in a desert. Did this piece of driftwood wash into a river in a area perhaps thousands of kilometers away before ending its life in this dry place? Nature is amazing.