3300–1300 BC Extent and major sites of the Indus Valley Civilization. The shaded area does not include recent excavations. The Indus Valley civilisation (IVC) was a Bronze Age civilization (3300–1300 BCE; mature period 2600–1900 BC) in the northwestern region of the Indian subcontinent mainly modern age Pakistan, noted for its cities built of brick, roadside drainage system and multi-storeyed houses.