For once there is a half decent Wikipedia article on it.Silver Pie wrote: ↑September 24th, 2022, 8:15 amFascinating. I've not heard of that one.
I'm reading Underworld by Graham Hancock. He focuses more on Malta and India, but does mention a few other places (like Japan). The book is essentially about underwater ruins.
https://en.wikipedia.org/wiki/Cuban_und ... _formation
This is one claimed sonar reading. I don't know if it is accurate.