It's hard to totally commit to basing who all was here mining and tomb raiding and making tombs, caches etc, based on imagery. Where I am at, the indian type heads are rare, instead there are old kings, with big hats, more Sumerian, /Egyptian /Phoenician style heads, and few that look maybe Toltec or some wierd giant race or something. There are also some large soldier heads that resemble Celts , Roman or Phygerian greek. Also a few alien looking ones, elongated cranium, no hats, some in skull form , some in head, nose, eyes, mouth form, but non human looking faces, but still humanoidish non the less. Wonder who did those? Maybe something some group found raiding a spot? Just many seemly whacky possibilities out there. I kind of have a feeling that the very ancient type groups could have been looting some type of other much much older ancient group's sites, and using them for there own tombs and vaults, and then others came along and looted them out as well. Kind of the last one looting wins type thing I guess.
If you study egyptian tomb history in egypt , this is how it was, there are literally tombs built on top of tombs, and looters at every time frame. You could fall thru the floor of one tomb, and end up in another. Also hieroglyphs were carved on top of hieroglyphs, if you age them, you are only aging the last pharoahs that carved over the top, in effect wiping out the existence of previous pharoahs/beliefs of the past.
But, it might as well have been santa clause hiding presents everywhere, because that is how we are looked at by mainstream society.
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