Marie Antoinette? Haven't they talked about the carbon dating that was done by Blankenship in the 1950s? Is showed that the oldest wood fragments they found in or around the money pit (ergo the original log platforms placed by the builders of the pit) dated back to around 1650 give or take 75 years. Long before the French Revolution. As for the flood tunnels, it is impossible to dig back to the original pit, and it would be a waste of time since the treasure vault would theoretically be in a different location. The main pit is a decoy that was only used to create the treasure vault and then it was sealed up with the booby traps in place. The vault would a few feet underground in a location where the land above it has been left undisturbed.