I passed these desert enclosures on the way back to camp one evening. Typically you wanted to be back in camp before sundown as sundown to darkness only took about 30 minutes. While the desert is deceiving during the day, it's doubly or more so at night.
I've no idea what these enclosures were for or how old they might have been. It certainly looks as though they were assembled from the rocks strewn over the surface here. Rocks of this size meant slow going unless other, heavier, vehicles had made a track, pressing the rocks into the sand and gravel below.
I saw no evidence of roofs which is not to say they didn't have them at some point. They were obviously build to shelter something. Maybe this was some waypoint on a trading route. Unfortunately I don't have a wider shot that might give some additional context but the absence of fine gravel and sand at the surface suggests the wind whips through here which in turn hints at the need to shelter from the wind, if not the sun.
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