Of the four great river civilizations, the Indus is the strangest. It covered more ground than Egypt and Mesopotamia combined, built cities with sewers while most of the world lived in huts, and traded from the Persian Gulf to Central Asia — yet it left no kings, no temples, no armies, and a script nobody can read. Four thousand years later, it still refuses to explain itself.
HimalayasArabian SeaGhaggar-Hakra (dry river)HarappaMohenjo-daroLothalDholavira The thousand-city network — stylized map c. 3300Early towns — Mehrgarhc. 2600The urban explosionc. 2300Peak — trade with Sumerc. 1900Decline beginsc. 1300The cities fade Rise · zenith · fall The rise It began in farming towns like Mehrgarh, settled as early as 7000 BCE — wheat, barley, cattle, and slowly, craft. Then, around 2600 BCE, the urban explosion: Mohenjo-daro, Harappa, Dholavira, and a thousand smaller settlements across what is now Pakistan and northwest India, all at once, all to plan. Streets on a grid. Covered drains running beneath them. Houses with bathrooms and wells. The Great Bath at Mohenjo-daro — watertight, bitumen-sealed — built when Rome was still a village that did not exist.
