Today, when we’ve unlocked the secrets of Egyptian hieroglyphs, Maya writing and hosts of far lesser known scripts, it seems as though there’s nothing left for enterprising epigraphers. Fear not, for there are actually a number of ancient writing systems still to be cracked. They include texts of the Olmec and Zapotec (Mesoamerican cultures preceding the Classic Maya), Proto-Elamite (writings of the earliest civilization of present-day Iran) and Rongorongo of Easter Island.

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