10 Mysterious Places In The World That No One Told You About

They say that in addition to the popular giant bas-reliefs of America’s greatest presidents, the Mount Rushmore contains a secret room in which all the important documents of US are saved, including historical documents as well as other important copies.

It is also said that the room door is carved out deep inside a huge rock and barred by a granite slab door that is highly equipped with a combination of the very complex locking mechanism.