I’m guessing the gold is hidden in plain sight - down in the bottom of those outhouses. (They’ve held up well over 150 years!)
I’ve read of guys that go through the old records and find out where the old out-houses were on people’s properties. Then they go over there and see if they can get permission to search for the old outhouse and search for the various treasures that fall down the holes!
The best places were the latrine holes behind bars and taverns.
Many a coin has fallen out of a drunkards pocket and into a latrine while he relieved himself.
I was digging a trench between a tank hole and the canopy area while building a gas station and found a honey hole. All kinds of med bottles, a shoe, a foot pedal sewing machine, etc....