OAK ISLAND "MONEY PIT" , CANADA
For hundreds of years, treasure hunters have ventured to Nova Scotia, Canada and tried to recover the treasure lies in tyhe Money Pit, protected by a series of ingeneous traps. As treasure hunters have attempted to recover the bounty from the Money Pit, cleverly engineered flood tunnels flood the shaft with sea water.
YouTube - ‪Oak Island Money Pit Part 1‬‏