The deep water Cuban megalithic find story is looking increasingly like a huge cover up of the facts, primarily by way of the deafening silence since 2002.
We have the ADC (Advanced Digital Communications) company lead, Paulina Zelitsky, who discovered the structures back in 2001 saying how they (the sturctures) are very similar in appearence to early Teotihuacan constructions, (themselves still a mystery) and made of Granite which isn't to be found naturally in the area (only limestone), and how she wants to 'enter' the structures, and that samples had been brought up showing "very polished granite"...and the geologist Manuel Iturralde-Vinent, Ph.D. who says "I cannot explain these structures by any geological means right now"...and then, for a decade...silence.
50,000 years is up to ten times the current accepted age of civilisation, and in my opinion, finds like this which demonstrate clearly the academics have gotten almost everything wrong, will not be encouraged to see the light of day...especially if the builders were VERY technological.
Almost certainly a cover up.
Something is not right. This message is just to keep things from messing up down the road