Ben Gates: [reading President's Secret Book] Here's the final entry by President Coolidge. "1924 - I found a plank in secret desk compartment. Plank photographed and then destroyed. Borglum commissioned to destroy landmarks in sacred Black Hills mountains."

Abigail Chase: Borglum... Mount Rushmore?

Ben Gates: He carved Mount Rushmore, to erase the map's landmarks, in order to protect the City of Gold.

Riley Poole: [muttering] Mount Rushmore was a cover-up.