There's lots of ancient archaeological discoveries been found all the time "all over the world" but every now and again something turns up that is going to change everything that we thought we knew and that's supposed to be a fact. Well, I know that according to science, facts don't change but when something turns up in the archaeology field that makes scientists scratch their heads, they either accept it or pass it on for further investigation i.e a cover up. Oh but it does happen and that's why things get covered up in the first place. That's why we have ancient forbidden discoveries of ancient artefacts - because it really does happen. We can't specifically say of the successfully covered up ones because they're covered up, right? But the one's that got away so to speak are the likes of the Baghdad battery just for instance.
Things do get covered up of which if they didn't they would destroy the mainstream way of thinking, religion would turn on it's head and science wouldn't be science. There's things that defy logic, are hidden in plain sight.