Threads That Speak: How The Inca Used Strings to Communicate | National Geographic

0:00 | Peru | Language | Post-Classical

One of the great mysteries of ancient Peru is that the Inca did not have a system of writing, but communicated with a system of strings tied with knots. For the first time, centuries-old knotted textile accounting records known as quipus were found buried with well-preserved organic material. They were found at the archaeological site of Incahuasi, the base of operations for the Inca expansion along Peru’s southern coast.

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