When Gutzon Borglum was sculpting Mount Rushmore, he proposed a room called the “Hall of Records” behind Abraham Lincoln’s hairline.
According to MentalFloss.com, he wanted to create the room to make sure people in the future knew the history of the monument and the meaning behind it.
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Borglum’s idea was eventually approved. Unfortunately, Borglum died after working on Mount Rushmore for 14 years, leaving the “Hall of Records” unfinished.
Eventually, the hidden room was finished in 1998, thanks to Borglum’s family. Information about how his project came to be and other important American documents were sealed in a titanium vault inside the room, which is still inaccessible to tourists.
Watch the video below by Business Insider to learn more about Borglum’s “Hall of Records:”
