Millions of people visit Mount Rushmore every year, but few realize the monument contains a hidden chamber deep inside the mountain. Concealed behind Abraham Lincoln’s head, the unfinished hall was ...

There's a secret room behind Mount Rushmore that's inaccessible to tourists Mount Rushmore has a hidden room that's closed to the public. Gutzon Borglum, the sculptor behind the monument, was worried ...

Many don't know there's a secret room behind President Lincoln's head or that the monument is actually unfinished.