Atlantis

As described by Plato,
The Richat Structure has striking similarities to the description of Atlantis offered by Plato in his work Critias.
The Mountain Range to the North, The sandy planes to the south, and then the relativity to the Atlantic. We must remember that during the Younger Dryas there was 2300 Cubic Miles of water relocated from a glacier in the Pacific North West of America. This caused a 400m rise in sea-level and would have engulfed the entire mountain range to the North of the Richat Structure and then eventually Atlantis itself sometime between 12,900 and 11,600 Before Present.

Resources

Richat Structure
Ouadane, Mauritania
https://maps.app.goo.gl/JMZr1zFAXr9Hwh4i6

Younger Dryas Research Paper: https://m.scirp.org/papers/74412