Mount Rushmore was started in 1927 and was finished in 1941
Technically it was never finished, construction stopped because the sculptor died.
There are many facilities at Mt. Rushmore. An amphitheater, museum, gift shop, etc.
The Secret room you guys are referring to is in a movie called Richie Rich lol
The "secret room" is behind Lincoln's left eye if I remember correctly. They spoke about it at the illumination ceremony.
The secret room is a special Memorial monument behind the heads that people don't have normal access to
The room you may be referencing could be the vault behind the monument.
It sounds like your questions were already answered. Let me know if you need anything else.
There is a secret room in the mountain.
Mount Rushmore has a room above Abe Lincoln's hairline and it's called the hall of records, it's not public though
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