Harappan Civilisation: Sites, Town Planning and Phases

Discovery and extent

The Harappan or Indus Valley Civilisation was South Asia's first urban civilisation. It was discovered in 1921 when Daya Ram Sahni excavated Harappa on the Ravi (Punjab, Pakistan). In 1922 R.D. Banerji excavated Mohenjo-daro on the Indus (Sindh). Sir John Marshall, then Director-General of the Archaeological Survey of India, announced the discovery in 1924.

The civilisation is named after Harappa, the first site found, following the archaeological convention of naming a culture after its type-site. It is also called the Indus–Sarasvati civilisation by some scholars because many sites lie along the dried Ghaggar–Hakra river.

Extent. It covered roughly 1.3 million sq km, larger than ancient Egypt and Mesopotamia combined. Its boundaries are usually given as:

• North: Manda (Jammu, on the Chenab) – and Shortughai in Afghanistan as a trading outpost
• South: Daimabad (Maharashtra, on the Pravara)
• East: Alamgirpur (Meerut, UP, on the Hindon)
• West: Sutkagen-dor (Balochistan, near the Iran border)

More than 1,500 sites are known, most of them small villages. Only a handful were true cities.

Chronology and phases

Radiocarbon dating gives three phases:

Exam questions mostly concern the Mature phase. Rakhigarhi studies have pushed early dates further back, but the 2600–1900 BCE mature range remains standard.

Major sites and what to remember

Memory hooks: *"Dock = Lothal; Plough = Kalibangan; Bath = Mohenjo-daro; three-part = Dholavira; no citadel = Chanhudaro."*

Town planning: the hallmark

Harappan cities show planning on a scale not seen again in India for over a thousand years.

1. Grid pattern. Main streets ran north–south and east–west, cutting each other at right angles and dividing the city into blocks.

2. Two-part layout. Most cities had a raised, walled citadel on the west (public buildings, possibly the elite) and a larger lower town on the east (houses of common people). Dholavira was an exception with three parts: citadel, middle town and lower town.

3. Standardised burnt bricks. Bricks followed a ratio of 1:2:4 (thickness : width : length) across hundreds of kilometres. This suggests strong central control or shared guild traditions. Kalibangan used mud bricks for houses.

4. Drainage. Every house was connected to covered street drains with manholes for cleaning. Historians regard this as the most advanced drainage system of the Bronze Age world.

5. Houses. Houses had a central courtyard, rooms around it, wells, and bathrooms. Doors opened onto side lanes, not main streets, which suggests concern for privacy and hygiene. Some houses had two storeys.

6. Public buildings.

• Great Bath (Mohenjo-daro): about 12 m × 7 m × 2.4 m deep, made watertight with gypsum mortar and bitumen. Probably used for ritual bathing.
• Granaries: the large structure at Mohenjo-daro and rows of granaries at Harappa, though some scholars question whether they stored grain.
• Dockyard (Lothal): a large brick basin linked by a channel to the river, interpreted as a dock (others suggest a reservoir).
• Reservoirs (Dholavira): an elaborate system of dams and tanks for storing rainwater – a lesson for water management in a dry region.

Society and polity

We know little about Harappan government because the script is undeciphered. Uniform bricks, weights and town plans suggest strong authority, but there are no palaces, royal tombs or temples clearly identified. Some historians suggest rule by merchants or priests; others propose a set of city-states. Society seems to have been relatively egalitarian compared with Egypt or Mesopotamia, though house sizes in citadels and lower towns differ.

The Harappan script

• About 400 signs are known, mostly on seals.
• It was written mostly from right to left; some long inscriptions are boustrophedon (alternate lines in opposite directions).
• It is pictographic/logo-syllabic and remains undeciphered, mainly because inscriptions are very short (average about 5 signs) and there is no bilingual inscription like the Rosetta Stone.
• The Dholavira signboard has 10 large signs and is one of the longest inscriptions.

Why town planning matters today

Mains questions sometimes link Harappan planning to modern urban challenges. Points to use:

• Sanitation first: covered drains in every street; India's urban drainage still struggles.
• Water harvesting: Dholavira's reservoirs show adaptation to arid conditions.
• Standardisation: uniform bricks and weights show the value of common standards.
• Zoning: separation of public, residential and craft areas.

Common traps

• Harappa and Mohenjo-daro are in Pakistan; Rakhigarhi and Dholavira are the largest sites in India.
• The Great Bath is at Mohenjo-daro, not Harappa.
• Lothal is on the Bhogavo (Sabarmati tributary area) in Gujarat; Dholavira is on Khadir Bet island in the Rann of Kutch.
• The civilisation was a Bronze Age culture; iron was unknown.
• Horse: clear evidence is absent; remains at Surkotada are disputed.

Recent research: Rakhigarhi and Dholavira

Rakhigarhi (Hisar, Haryana) is a cluster of mounds covering over 350 hectares, which makes it one of the largest Harappan settlements anywhere. Excavations led by the Deccan College team found cemeteries, workshops and planned streets. An ancient DNA study of a skeleton from the site, published in 2019, found no detectable Steppe pastoralist ancestry and a mix of ancestry related to ancient Iranian farmers and South Asian hunter-gatherers. The finding is often cited in debates on the origins of the Harappans, but students should present it carefully as one study of limited samples.

Dholavira (Khadir Bet, Kutch) became India's 40th World Heritage Site in 2021. It is admired for its water management: the city had at least sixteen reservoirs, channels and dams to catch the scarce monsoon run-off of two seasonal streams. Its stone architecture, rather than only bricks, sets it apart. The signboard of ten large script signs, possibly placed above the northern gate, is one of the most famous Harappan inscriptions. Large stadium-like open spaces have been interpreted as places for ceremonies or markets.

How to write a Mains answer on Harappan urbanism

1. Introduction: define the Mature Harappan phase (c. 2600–1900 BCE) and its huge extent.
2. Body: planning (grid, citadel–lower town), building technology (standard bricks), civic amenities (drains, wells, baths), public structures (granaries, dock, reservoirs), and economic base (agriculture, crafts, trade).
3. Evaluation: the lack of palaces and temples, the undeciphered script and the debate on political authority.
4. Conclusion: relevance today – sanitation, water harvesting and zoning remain lessons for Indian cities under programmes such as AMRUT and the Smart Cities Mission.

A simple diagram of the citadel and lower town, or a map of five sites, earns extra marks in Mains.