the harappan civilization belonged to the chalcolithic age.
it was estimated that indus valley civilization flourished between 2500 BCE and 1500 BCE.
the discovery of the indus valley seals and pottery among the ruins of mohenjodaro means mound of the dead.
it is located on the banks of the river indus.
harappa is situated on the banks of river ravi.
about 2800 site has been discovered so far , the indus valley civilization is the largest civilization of the ancient world.
some majors sites are lothal , ropar , kalibangan , alamgirpur , surkotada , banawali and dholavira.
some important public buildings were great granary , great bath nad assembly hall.
it is the india's earliest known urban civilization.