I wouldn't believe that claim either if there is no archeological evidence, but I'm wondering why there isn't actually some civilization that walked by, said "this shit is cool", and built a city there.
If I was an ancient pharoah I certainly would have ordered a city built there. Maybe with a nice pyramid in the middle instead of some burning man
""The Richat Structure has been the subject of unsubstantiated fringe claims to be the site of Atlantis mentioned in the works of Plato.""