I can't imagine ever telling someone I found it. I don't know the exact tax implications but I imagine it would be a lot like gambling which can be up to a 40%

I can't imagine ever telling someone I found it. I don't know the exact tax implications but I imagine it would be a lot like gambling which can be up to a 40% taxation rate. I would quietly take the gold, turn it into cash, and slowly launder the cash and never report it. Heck, I would just pay cash for everything and would probably just spent it naturally over my lifetime like this without bothering to launder. As long as I avoided the kinds of purchases that raise eyebrows, the IRS would never know. My normal salary would just go into savings/investments. I imagine most people would do this, at least the kinds of people who would hunt $1m lockboxes. As a side note, I wonder if you can DIY ground penetrating radar light enough to be carried on a drone. Imagine a few drones shooting electromagnetic waves at the ground and waiting for a reflective ping from a metal box. You could probably cover a lot of ground with a few drones running everyday for a few days. If you can figure out how to filter out the false positives, you can probably just find this thing via radar. I imagine an old man doesn't have the ability to dig very deep and this thing might only be a couple feet underground, so within some reasonable sensing specs. edit after some googling: Working ground penetrating radar drone for $500 here. Heck, its even FCC legal! Its a IG42-SB4 robot which can drive for 3 hours on stock batteries, so maybe double that battery pack and you get 6 hours of non-stop sensing. Just a few of these should cover every human walkable path in a matter of days, perhaps a couple weeks at most (guesstimate). https://hackaday.io/project/4440-open-ground-penetrating-radar https://hackaday.io/project/4440-open-ground-penetrating-rad... Looks like he uses this visualization library from the US Navy. I'm no expert but I imagine something like this would be able to show a treasure chest-like box very easily once you have all the data. Cubes don't exist in nature so once you see something cube-like in your data, go on a hike. If you're clever you can have your drones pipe their data via 4G every five minutes or so, shoot it to your desktop, and look at this data in almost realtime. Or if you're especially clever use CV to look for square-like shapes in the data and to alert you when they pop-up. Now you can tell that drone to go back to double-check and to scan from different angles. If it really, really looks like a cube from different angles, then go on a hike and enjoy your million bucks. http://pfmabe.software/ http://pfmabe.software/