May be a couple of decades older than thought?
https://www.theguardian.com/world/2021/aug/04/scientists-discover-machu-picchu-could-be-at-least-two-decades-older-than-thought
https://www.cambridge.org/core/journals/antiquity/article/new-ams-dates-for-machu-picchu-results-and-implications/323804857B6EE4DD85B5B337F9E3C933#
Duncan, the Cambridge article is exactly the sort of hard science and interpretive analysis I like to read. Very interesting assessment.
+1
Thanks Duncan.
It's not unreasonable really, it makes sense to build where people had been living before, but not necessarily in large numbers