No, it really isn't. That part of Mauritania is not in front of The Pillars of Hercules.
Nothing to accept. There are so many discrepancies between Plato's writings and Richat structure that only the ignorant would consider it a reasonable option.
Scepticism is appropriate when it comes to claims for the discovery of Atlantis - superficially plausible ideas for its location appear regularly, but they generally pick the features that match, however vaguely, the ancient writings, and ignore the rest. I'd be inclined to reserve judgement - does the geographic history match the Atlantean myth? Were there really well-established civilisations in the pre-pottery Neolithic era? The oldest monoliths known, at Göbekli Tepe in Turkey, are around this age, and are thought to be pre-agricultural...
