The study reveals that subsidence-related sea-level rise and extreme climate oscillations made it increasingly difficult to maintain the city. These environmental challenges ultimately contributed to the collapse of the Saudeleur chiefdom.
By the second phase, rising sea levels had already submerged parts of the site, creating immense challenges for its inhabitants. This contributed to extensive environmental strains within the city.
Led by Chuan-Chou Shen, the research team analysed coral rubble from the site to establish a precise timeline for Nan Madol's construction and decline.
New findings suggest that environmental pressures forced the city's abandonment 600 years ago, offering important lessons for the modern world regarding climate change impacts.
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