The Ancient Native City Hidden Beneath America – And Why Scientists Think It Was Once One Of The Largest Settlements North Of Mexico
Why?
This is one of the most intensely studied questions in North American archaeology, and it does not have a single agreed-upon answer.
What it has is a set of converging evidence streams that together paint a picture of a complex, multifactorial collapse — one in which no single cause was sufficient on its own, but in which several interconnected pressures combined to make the city unsustainable.
The environmental evidence is one of the most compelling lines of inquiry.