It consists of glyphs resembling human, animal and plant figures as well as abstract, geometric symbols.
Dating the text has proven tricky, since researchers can only radiocarbon-date the wood, not necessarily the text itself.
Although a combination of human ingenuity and computing power solved this centuries-old text, there are still other codes, both modern and ancient, whose meanings have eluded even the most skilled cryptographers.
Explore other texts whose meanings are still hidden to history. MYSTERIOUS CIPHER CODE CRACKED Discovered in 1908 in Crete, the Phaistos Disk is a Bronze-Age relic containing a script that dates back about 4,000 years.
But most scholars accept it as a genuine product of its time.
Discovered on Easter Island in the 19th century, Rongorongo is a text found only on fragments of wooden objects.