In the center of the Sahara I found some structures that look like bracelets. Since I assume that these are also old graves, I called them "bracelet graves". Although they have a central rotunda with two arms extending from them, they don't seem to fit in with the large family of antennae graves. I haven't seen these strange shapes anywhere else on the internet either. What are they? How old or young are they? does anyone know more?
Images courtesy of Google Earth™
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