Maya collapse mystery deepens as scientists find no drought at key site

New sediment analysis from a Guatemalan lake shows one Maya city thrived climatically while its population vanished, suggesting social collapse, not drought, drove the civilization's end. | Contesto: cronaca

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• Maya collapse mystery deepens as scientists find no drought at key site

Contesto

A new study challenges the long-held theory that drought alone caused the mysterious collapse of the Maya civilization, revealing that at least one major city enjoyed a stable climate even as its population abruptly disappeared. Researchers analyzing lake sediments from the site of Itzan in Guatemala have found no evidence of severe drought during the period when the city was abandoned, deepening the enigma surrounding one of history’s great societal breakdowns. The findings, based on chemical and biological markers preserved in layers of mud at the bottom of a nearby lake, indicate that rainfall patterns remained consistent and water levels stable at Itzan during the Terminal Classic period, roughly A.D. 800 to 1000. This was precisely the time when many Maya cities across the lowlands of Mexico and Central America were being deserted, leading scholars to suspect a widespread mega-drought had crippled the civilization’s ability to sustain itself. Instead of a simple environmental catastrophe, the new evidence points to a far more intricate scenario: the Maya world was a tightly interconnected network of city-states, linked by trade, tribute, and political alliances. When drought struck neighboring regions, the resulting wars, mass migrations, and economic breakdowns likely rippled outward like a contagion, dragging even climatically stable communities like Itzan into decline. The city’s population did not starve for lack of rain; it likely fled or was absorbed by upheaval elsewhere. This revelation forces archaeologists to reconsider the role of climate in the Maya collapse. While drought undoubtedly stressed many areas, the new data from Itzan suggests that social and political factors—such as the collapse of trade routes, the breakdown of elite authority, or the pressure of refugees—could have been equally decisive. The Maya civilization, at its peak, was a complex web of some 60 independent city-states, and its unraveling may have been as much about human decisions and systemic fragility as about environmental change. The study adds to a growing body of research that paints the Maya collapse not as a single event but as a patchwork of regional crises...

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Categoria: cronaca