As I said earlier, there was something else hidden in the vault. There were 16 porcelain panels inside the vault. In the order to let people know how this great monument came into existence, those panels have stories of Mount Rushmore’s creation. It has the real reason of why this monument was carved and also the reason why these four presidents were chosen to be carved on this black hill of South Dakota. This panel was actually very useful for people who want to know the history of United States. The special incidents that took place in changed the history of the country. All the achievements and past of the country was engraved. Not just this, the declaration of independence and the constitution was also engraved on these panels.