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Nan Madol — a mysterious city lost in the middle of the Pacific Ocean abandoned in the 18th century

Published 11/02/2025 às 10:11
Pacific Ocean
A conceptual representation of a reconstructed Nan Madol. Photo: National Taiwan University

Nan Madol is a city built on artificial islets in the middle of the Pacific Ocean

Nan Madol is a unique archaeological site located on the southeast coast of Pohnpei Island, in the Federated States of Micronesia, in the Pacific Ocean. Known as the “Venice of the Pacific“This ancient city is made up of more than 90 artificial islets interconnected by a complex network of canals, forming an impressive complex of megalithic ruins that witness the ingenuity and social organization of its builders.

Origin and construction in the Pacific Ocean

The construction of Nan Madol began around the 8th or 9th century, with the construction of the first artificial islets in that location in the Pacific Ocean.

However, the site's characteristic megalithic architecture began to be erected between 1180 and 1200 AD. The city served as the dynasty's ceremonial and political center. Health, which unified the people of Pohnpei under a centralized government.

It is estimated that the resident population of Nan Madol did not exceed a thousand inhabitants, including nobles, priests and their servants.

The construction of the islets involved the use of basalt columns and coral blocks, forming elevated platforms above the coral reef.

The walls of some structures reach up to 7 meters in height, demonstrating an impressive knowledge of engineering and social organization on the part of the builders.

Map of Nan Madol (Photo: Public Domain)

Social organization and ceremonial functions

Nan Madol was not only a political center, but also played a crucial role in the religious and ceremonial activities of the Saudeleur dynasty.

The city was highly stratified, with social hierarchy reflected in the size and complexity of residences within the complexes.

The largest structures belonged to the ruling elite, while the smaller ones were intended for members of lower social status.

Each islet within Nan Madol had a specific function, ranging from residences and meeting places to temples and tombs.

For example, the islet of Nandauwas is notable for housing a large royal tomb, surrounded by massive basalt walls.

Other islets were dedicated to the construction of canoes, food preparation and other activities essential to the ceremonial and daily life of the city.

Decline and abandonment

The Saudeleur dynasty ruled Pohnpei until approximately 1628, when it was overthrown by Isokelekel, a foreign invader who established a new system of government on the island.

After the fall of the dynasty, Nan Madol was abandoned around the 17th century, although the exact date is not known, and was eventually swallowed up by vegetation and the elements.

Recent studies suggest that climate change and rising sea levels played a significant role in Nan Madol's decline.

Carbon dating analyses indicate that the region where Nan Madol is located was once dry land, and that the city was abandoned in the 15th century due to climatic factors.

World Heritage and Preservation Efforts

In 2016, Nan Madol was enrolled in the UNESCO World Heritage List, being the first site in the Federated States of Micronesia to receive such recognition.

However, due to threats such as silting of watercourses, uncontrolled growth of mangroves and the fragility of structures, the site was also included on the List of World Heritage in Danger.

Efforts are currently underway to preserve and protect Nan Madol. Preservation of the site is crucial not only to understanding the history of Micronesia, but also as a case study on the impacts of climate change on coastal civilizations.

Nan Madol stands as a stunning testament to the human ingenuity and social complexity of ancient Pacific civilizations.

Its ruins offer valuable insights into the political, religious and social organization of the Saudeleur dynasty, as well as serving as a reminder of the environmental challenges that can lead to the decline of entire societies.

With information from heritageadapts.

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Cleide
Cleide
11/02/2025 20:27

This Judge deserves a trophy!

Pedro Paulo Maestri da Silva
Pedro Paulo Maestri da Silva
11/02/2025 21:47

Thanks Fabio Lucas. Very interesting. I already knew it from the History series. This type of report is intriguing.

Lara
Lara
12/02/2025 13:57

Excellent article. Congratulations.

Fabio Lucas Carvalho

Journalist specializing in a wide range of topics, such as cars, technology, politics, shipbuilding, geopolitics, renewable energy and economics. I have been working since 2015 with prominent publications in major news portals. My degree in Information Technology Management from Faculdade de Petrolina (Facape) adds a unique technical perspective to my analyses and reports. With over 10 thousand articles published in renowned media outlets, I always seek to bring detailed information and relevant insights to the reader. For story suggestions or any questions, please contact me by email at flclucas@hotmail.com.

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