> I would say your guess is as good as mine
Spolier: I did a few decades of exploration geophysics, some time working on the production circuit of the SuperPit, and part of a team that sold a global minerals intelligence database to Standard & Poor 16 or so years ago.
> there might just have been untold megatons within reach as low-hanging fruit
And yet the total amount of known gold in all of history is less than a quarter of a single megaton .. suggesting mega tonnes of gold from from before the Roman Rio Tinto mining days has lasted more than two thousand years stacked up as nuggets in many many many caves and structures without being found.
That's an interesting hypothesis.
> Of course cave men had no formal education
Interestingly nor did my father (born 1935) and he's still walking about
> recognize the advantage of not telling anybody about "untold" amounts of anything when it's regarded as valuable.
Can you expand upon the value of megatons of gold to cavemen ?
> no telling what they were keeping off the books when there weren't any books yet !
Oh, you know, gravitometers, ground penetrating radar, seismic surveys, etc. are all means of exploring for things not yet on any ledger.
> Edit: Not my downvote!
I don't fuss much about those, not on my comments, and I see no reason to downvote yours - just ride it out, they mostly even out over time.