The Harappans knew how to write, and over 2,000 stone seals have been found in the Indus Valley. These seals were small tablets, which left an impression when pressed into a soft substance like clay. They were quadrangular in shape. These seals are some form of writing, but unfortunately, they have not been deciphered yet.
Harappan writing consists of short strings of symbols. Some say that each symbol represents a picture or idea; others say it represents a sound. The fact, however, is that no one has actually been able to understand or read the writing of the Harappans.
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