Mohenjo-Daro: The Ancient Indus Valley Metropolis

One of the World's First Cities

Mohenjo-Daro ("Mound of the Dead" in Sindhi) is one of the earliest and largest urban settlements of the Indus Valley Civilization (c. 2600–1900 BCE). Located in present-day Sindh, Pakistan, it flourished ~2500 BCE—contemporary with Egypt's pyramids and Mesopotamia's ziggurats.

Urban Planning Mastery

• Grid Layout: Straight streets intersecting at right angles; distinct residential, commercial, and civic zones.
• Advanced Drainage: Covered sewers along streets; household bathrooms with chutes to street drains; manholes for cleaning. Unequaled until Roman times.
• Standardized Bricks: Uniform 4:2:1 ratio (sun-dried & fired); modular construction.
• Great Bath: 12×7×2.4 m watertight pool (bitumen-sealed), surrounded by colonnades—likely ritual/ceremonial use.
• Granaries & Assembly Halls: Large public structures suggest centralized storage and governance.
• Wells & Water Supply: Hundreds of private and public wells; sophisticated hydraulic engineering.

Society & Economy

• Trade: Beads, shells, cotton, timber, metals with Mesopotamia (Dilmun/Magan), Persia, Central Asia.
• Writing: Indus script (undeciphered) on seals, tablets—administrative/commercial use.
• Crafts: Bead-making (carnelian, steatite), metallurgy (copper/bronze), pottery, shell-working.
• No Palaces/Temples: Suggests collective/merchant governance rather than monarchy/theocracy.

Decline & Mystery

Abandoned ~1900 BCE. Theories:

• Climate change: Monsoon weakening, Ghaggar-Hakra (Sarasvati) drying.
• River shifts: Indus changed course; floods or drought.
• Tectonics: Earthquakes altered drainage.
• No evidence of invasion/violence (no weapons, unburied skeletons rare).

Legacy

UNESCO World Heritage Site (1980). Mohenjo-Daro proves that urban sophistication—sanitation, planning, standardization, trade—arose independently in South Asia 4,500 years ago, rivaling any ancient civilization.