I find it hard to believe that all this was functional and productive a mere 500-1000 years ago.
Some of the images show erosions and waterways that would have taken longer than that.
The size of it - the vastness - and what would cause these people to decide “Hey, we’re tired of living next to the ocean with all the fish and stuff, let’s go THIRTEEN THOUSAND FEET UP into the mountains and try to grow coconuts?
I mean something about this simply doesn’t fit the standard archeological and cultural and migrational considerations that have been offered.
Frightened people go to extreme heights.
Think tsunamis on the coasts.
There are tales/myths anoungst the Tibetans that they migrated to the mountains from the coast to escape 'mountain topping' tsunamis.
Kuelap - The Machu Picchu Of Northern Peru (Chachapoyas - White, blonde haired people)
as a student of human migration patterns on a much larger scale, I might add that your statement has been my own opinion more often than not.