@elilla These are non expert observations from my life in that region. The areas the indigenous peoples tended to live in the summer were also, usually, at elevation. So the days would get really hot but the temp would drop dramatically over night. So while it might get into the high 90s to low 100s at peak heating it would drop into the 60s overnight. So a lot of their building methods were designed to trap that cooler air over night. When I was a kid I’d often go camp “up the mountain” in the summer. Go up a couple of thousand feet and things are a lot more bearable. Humanity in general losing the wisdom of going where it makes sense to be for the season was a fucking tragedy. Sorry about the units in this post. Don’t have the energy to look up conversions right now.