The sea of the ship of the desert

I saw this stretch of sand and did a double take. The pattern of light on it made it look like the bottom of a shallow sea It was not hard to imagine that the light refracted through ripples in water could make the caustics and dark patches that I saw. But the patterns were static. Things had walked across the desert, and then the wind has worked over their tracks to make the gentle ripples in the sand that you see in the featured photo. I looked around to check whether I could recognize from a new spoor what had made these patterns. The obvious guess was right: they were the footprints of camels.

Looking up from the sand it was clear what attracted the camels here: the acacia trees which were all around me. The Acacia jacquemontii is a common second wave of growth over sandy areas which have been stabilized by plants such as the khimp and phog. While writing this now, I had a moment of doubt about the identification. Was it really the local babool tree, A. jacquemontii? The shape of the canopy looked like that of the babool. But still, could it be the imported Israeli babool, Acacia tortilis, which the state government is partial to, since it grows faster? I looked at a photo I had taken of the leaves, and found that it was indeed the native babool.