This gained popularity a year or two ago when a few youtubers took it upon themselves to determine that if Atlantis were real, what geological features might be the most likely candidates? Ancient Architects and Bright Insight both come to mind, here, with the latter choosing the Richat Structure as their target of interest and Ancient Architects chosing Rockall.

However it may be appealing to suggest that it fits Plato's description, the Richat structure is almost certainly just the remains of a fantastically enormous geologic dome that grew and shrank repeatedly over eons; causing the ring structures to form from the expected natural sedimentation and similar.

Still absolutely wild to consider, given its size.