You sir are an irrational conspiracy nut. Every government in the world has corruption and hides things, but no one is covering this stuff up. Hell, Cuba hates the US government. Do you really think they would coordinate with us to cover this up? The answer is NO btw.
There are plenty of lies and disinformation... always has been in every civilized government in history... That doesn't equal hiding information about aliens or ancient civilizations. They aren't finding any metal or technological inventions at these sites... Just rock. With enough manpower and a few wooden and stone tools, all of these cities could be built. Hence, what value would there be to hide this? The gov't could care less...
Something is not right. This message is just to keep things from messing up down the road