A thought ~ where did all the Aztec gold come from?
The Spanish found plenty of silver but little gold ~ except that which had already been acquired by the Indians. Which Indians is also a good question.
As DeSoto moved North from the Gulf of Mexico he asked the Indians where to find gold. They'd point further North.
Just so happens that was the correct and only answer ~
Is it Clovis NM? That’s near Roswell, isn’t it?