Regional Interaction in the Prehistoric Indus Valley

Initial Results of Rock and Mineral Sourcing Studies at Harappa

The exchange and communication systems that connected distant parts of the Indus Civilization (c. 2600 to 1900 BC) and beyond had roots beginning in the early Neolithic period. These networks connected the site to multiple source areas from ranging 120 km to more than 700 km away.

Above: Cubical weights in three graduated sizes. These weights conform to the standard Harappan binary weight system that was used in all of the settlements. The smallest weight in this series is 0.856 grams and the most common weight is approximately 13.7 grams, which is in the 16th ratio.