Slideshow on the Rohri Flint mines used by the ancient Indus Valley peoples to excavate and gather natural resources and raw materials for use and trade. Almost all known human sites from 100,000 to 3000 BCE in South Asia could fit into the Rohri flint quarries, so large was this enterprise. By Paolo Biagi.

The original 1997 version of this section on a black background can be seen at old.harappa.com.