Oak Island is a small island off the coast of Nova Scotia. In the late 1800's some kids found a hole that lead to 100's of years of treasure hunters (including Presidents, John Wayne, others). It was 200+ ft deep with wood planks every 10-20ft, they found a mysterious coded stone inscribed that is supposed to read about "millions 40ft down" or some such thing. Legend says 7 must die before treasure is found, 6 have died so far. The thing was booby trapped and flooded when they got so far down.
There is a silly TV show about 2 brothers that are hellbent on finding whatever is hidden on that island be it in the money pit or elsewhere. There were other stones found inscribed and in odd positions all over the island.