Rongorongo Script

Rongorongo still cannot be read. But “we know nothing” is also incorrect.

Outsiders recorded the writing in the nineteenth century, and approximately 26 inscribed objects survive today. The texts are mostly incised on wooden tablets with figurative and compound glyphs.

The writing is generally arranged in reverse boustrophedon: the tablet is turned 180 degrees at the end of each line to read the next. Such regular organisation, recurring sequences and correction marks suggest more than random decoration.

The most promising section is the lunar-calendar sequence on the Mamari tablet. There is fairly strong scholarly agreement on a structure associated with a sequence of lunar nights. This does not mean the whole system has been deciphered.

A radiocarbon study published in 2024 made the debate more interesting: one tablet's wood was dated to the fifteenth century. This strengthened the possibility that rongorongo was invented independently of European contact—but the wood's age is not the same as the date when the writing was incised.

Rongorongo is not entirely obscure. There is fairly strong agreement among researchers that a particular sequence on the Mamari tablet is a lunar calendar.

Lines Ca6–Ca8 of Tablet C / Mamari, and possibly surrounding sections, are interpreted as a calendrical sequence reflecting the list of lunar nights known from Rapa Nui and Eastern Polynesian traditions.

Paul Horley's astronomical and palaeographic analysis argued that the sequence fits a 30-night lunar cycle. A new assessment published by Oxford University Press in 2024 also recognises the “lunar calendar” interpretation as one of the strongest partial readings in the scientific literature.

Recognising a calendar sequence is different from knowing the phonetic values of individual glyphs. Mamari therefore offers a window onto the text's subject, not yet a dictionary.

🔴 Rongorongo is genuinely undeciphered — but we are no longer entirely in the dark.

For me, the most exciting aspect is not “strange symbols”, but the possibility that a society as isolated as Rapa Nui invented writing independently. If a pre-European Rongorongo inscription is directly dated, a very significant new example could be added to the history of independent inventions of writing.

The 2024 result substantially strengthened this possibility without settling it. Later writing could have been incised on old wood.

The greatest obstacles to decipherment are the small corpus and nineteenth-century cultural catastrophe. The tradition of reading or teaching rongorongo was broken without leaving a reliable translation key. Current research therefore proceeds through high-quality 3D scans, sound palaeography, statistical patterns, and Rapanui language and ethnography. These form its current path.