Its script has not been deciphered. Basic questions about the people who created this highly complex culture are unanswered. T he Harappans used the same size bricks and standard weights for a thousand miles. There were other highly developed cultures in the area. Some are thousands of years older.
Skeletons testify to a continual intermingling of races.
Harappa was settled before the Harappans of the Indus Valley, and they were replaced by other still anonymous peoples. B.C. This was the ancient Ghaggra-Hakra River or Sarasvati of the Rig Veda. Its lost banks are slowly being laid out by researchers. Along its bed, archaeologists are discovering a whole new set of ancient towns and cities. This trade was conducted with real financial sophistication in amounts that could involve tons of copper.