You would certainly have to live a long time because they are intentionally not going to dig the whole site. They are aware of the importance of the site and know that todays tools and techniques arent sufficient and as such want to leave it for future generations more capable.
I disagree. It is under the control of Islamics who suspect that what will be found there will blow their whole world concept to pieces. Not just Muslims but other dark forces have an interest keeping the site controlled and buried.
No one really wants to know of the world and times of Noah that mirrors our own world as it is now!
And that is what they are trying to keep buried.