Rongorongo Script Dates to 15th Century Rapa Nui
Radiocarbon testing confirms the writing system predates European contact by more than 200 years.
Updated on Oct. 20, 2026 in Geology
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Radiocarbon dating of a wooden tablet has confirmed that the Rapa Nui rongorongo script originated as early as the 15th century. This research, published in 2024, establishes that the writing system predates documented European arrival on the island by more than 200 years.
Why it matters
The findings challenge long-standing assumptions about the potential influence of European contact on Rapa Nui cultural development. By dating the artifact to between 1493 and 1509, scientists provide evidence that the script likely emerged as an independent indigenous invention.
Researchers tested four wooden tablets, finding the oldest specimen dates to the 15th century while the others originated centuries later. This collection represents a significant portion of the roughly 24 known surviving objects bearing the 15,000 recorded characters.
The players
Eugene Eyraud
A 19th-century missionary who provided the earliest written account of the wooden tablets.
The details
The team performed radiocarbon analysis on wooden tablets held by a Catholic congregation in Rome to determine their age. Rongorongo — a system consisting of more than 400 distinct glyphs — has been the subject of decypherment efforts for 150 years. Because no such artifacts remain on the island of Rapa Nui itself, the study of these external holdings is critical to understanding the script's origin.
Timeline
1493-1509: Wood for the oldest tested rongorongo tablet was obtained.
1720s: European explorers made their first recorded arrival on Rapa Nui.
1864: Missionary Eugene Eyraud provided the first known description of the tablets.
The Tech Race
This finding marks a major departure from historical theories that often attributed indigenous scripts to external cultural transmission. By predating the 1720s arrival of Europeans, the evidence shifts the trajectory of the study toward independent invention.
Researchers are continuing to analyze the 15,000 known characters to search for linguistic patterns within the 400 distinct glyphs. There is currently no active translation for the script, which remains one of the world's most enduring archaeological mysteries.
The takeaway
This discovery confirms that Rapa Nui culture developed a complex writing system entirely on its own. Researchers will continue to watch for linguistic breakthroughs in the decipherment of the 400 identified glyphs.
Further reading
Explore more findings on Geology to understand how scientists map historical timelines.
Source note: This article includes information reported by Economic Times.
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