Indus Valley (Harappan) Civilisation

Flagship overview

The Indus Valley Civilisation (IVC), also called the Harappan Civilisation after Harappa, the first site to be excavated, was the earliest urban civilisation of the Indian subcontinent. It was a Bronze Age (Chalcolithic) culture of the third millennium BCE, contemporary with the city civilisations of Mesopotamia and Egypt, but the largest of the three in geographical area. Its hallmarks are gridded, planned cities, standardised kiln-fired bricks, an advanced covered-drainage system, a uniform system of weights, a still-undeciphered pictographic script on steatite seals, and a striking absence of grand royal tombs, palaces, or temples. The source base is almost entirely archaeological (the Archaeological Survey of India and later excavations) rather than literary, since the script cannot be read.

For CAPF, this is a high-yield static-fact topic. The examiner tests site-to-river and site-to-finding matching, the years and discoverers of sites, the town-planning facts (drainage, brick ratio, citadel and lower town), the metals known and not known (no iron), trade contacts, and the multi-causal decline. The questions are objective and chronology-light, so precise pairing of sites with their unique features carries the most marks.

Core narrative

Discovery and naming

The civilisation was first brought to light in 1921 at Harappa (on the left bank of the Ravi, in present Punjab, Pakistan) by Daya Ram Sahni, and in 1922 at Mohenjodaro (literally "mound of the dead", on the Indus in Sindh) by Rakhal Das Banerji. Both worked under the direction of Sir John Marshall, then Director-General of the Archaeological Survey of India, who in 1924 publicly announced the discovery of a new civilisation. The British scholar Sir Mortimer Wheeler conducted important later excavations. The find pushed the known antiquity of Indian civilisation back by some two thousand years, beyond the Vedic age that earlier scholarship treated as the starting point.

Chronology and the three phases

The civilisation is conventionally divided into three phases:

• Early Harappan (c. 3300 to 2600 BCE): the formative, proto-urban phase, with regional cultures such as the Hakra and Kot Diji wares; sites like Kalibangan, Banawali, and Rakhigarhi show this phase.
• Mature Harappan (c. 2600 to 1900 BCE): the full urban phase, the period of the great cities, standardised weights, seals, and long-distance trade. This is the phase usually meant by "the Harappan Civilisation".
• Late Harappan (c. 1900 to 1300 BCE): the de-urbanisation phase, with the decline of cities and the rise of successor regional cultures (Cemetery H culture at Harappa, the Jhukar culture in Sindh).

It is a Bronze Age civilisation: the people used copper, bronze (copper alloyed with tin or arsenic), gold, silver, and lead, but did NOT know iron. Iron appears in the subcontinent only later, in the Vedic and post-Vedic period.

Extent and geography

The Harappan zone was the most extensive of all the Bronze Age civilisations, roughly triangular, covering parts of present Pakistan and north-western and western India. The four cardinal extremities are a favourite matching question:

• Westernmost: Sutkagendor (on the Makran coast of Baluchistan, near the Iran border).
• Easternmost: Alamgirpur (in Uttar Pradesh, on the Hindon, a Yamuna tributary).
• Northernmost: Manda (in Jammu, on the Chenab).
• Southernmost: Daimabad (in Maharashtra, on the Pravara, a Godavari tributary).

The sites cluster along the Indus and its tributaries and along the now-dry Ghaggar-Hakra river system (frequently identified with the Vedic Saraswati). The largest number of mature Harappan sites have been found in the Ghaggar-Hakra basin.

Town planning, the signature feature

Town planning is the single most-tested aspect. Cities followed a grid layout, with main streets running north to south and east to west, crossing at right angles to divide the town into rectangular blocks. A typical large city had two clearly separated parts:

• A raised, fortified citadel (the western, higher mound), holding the important public structures.
• A lower town (the eastern, larger residential area), laid out on the grid.

The defining structural features were:

• The most advanced drainage system of any contemporary civilisation: covered brick drains ran along the streets, house drains connected into them through soak pits and manholes for cleaning, and the whole was built of mortar and gypsum.
• Standardised kiln-burnt (baked) bricks, used in a fixed ratio of length : breadth : thickness of 4 : 2 : 1.
• The Great Bath at Mohenjodaro, a large watertight tank (about 12 m by 7 m, around 2.4 m deep) made watertight with bitumen, with steps at either end and rooms around it, most likely used for ritual bathing.
• A Great Granary at Mohenjodaro (the largest building there) and a complex of granaries at Harappa near the citadel.
• Houses of baked brick built around a central courtyard, often two-storeyed, many with private wells, bathrooms, and connection to the street drains. There were no windows facing the main streets.

Economy

The economy rested on agriculture, animal husbandry, craft production, and trade.

• Crops: wheat and barley were the staples; the people also grew peas, sesame (til), mustard, dates, melons, and cotton. The Harappans were the first in the world to produce cotton, which the Greeks later called "sindon" after Sindh. Rice is attested at Lothal and Rangpur in Gujarat.
• Domesticated animals: humped cattle (the zebu), buffalo, sheep, goats, pigs, dogs, and the elephant; the camel is known. The horse is generally ABSENT or, at most, marginal and disputed (a few bones reported from Surkotada).
• Crafts: bead-making, shell-working, metallurgy (copper and bronze tools and vessels), pottery (red ware painted with black designs), and seal-cutting were highly developed.
• Trade and exchange: extensive internal and external trade by barter (there were NO metal coins). The Harappans traded with Mesopotamia, where their land is called Meluha in cuneiform records; intermediary trading stations were Dilmun (Bahrain) and Magan (Oman). Lothal in Gujarat had a brick dockyard, the strongest evidence of maritime trade. Imports included gold, silver, copper, tin, and precious stones; the Sumerians prized Harappan carnelian beads. Weights and measures were standardised and binary, in multiples of 16 (16, 32, 64, and so on).

Seals, script, and writing

The seal is the most distinctive Harappan artefact. Seals were mostly square and made of steatite (soapstone), bearing an animal motif (the one-horned "unicorn" is the commonest, also the bull, rhinoceros, tiger, and elephant) above a short line of script. They were probably used by merchants to stamp goods and as marks of ownership or identity. The famous Pashupati seal and several with religious scenes also come from this corpus.

The Harappan script is pictographic and logo-syllabic, with around 400 to 450 distinct signs. It was written boustrophedon (the first line right to left, the next left to right, alternating like an ox ploughing). It remains UNDECIPHERED, which is why no king's name, dynasty, or self-description survives, and why the polity and language remain conjectural.

Polity and society

The Harappan polity remains the most uncertain feature, precisely because the script is unread and there are no obvious palaces, royal tombs, or temples. The remarkable uniformity of weights, bricks, seals, and town plans across a vast area suggests strong, centralised control of standards, but historians differ on whether this was a single state, a federation of city-states, or a class of priest-merchants rather than warrior-kings. The general view is of an urban society dominated by a merchant and administrative elite rather than a militaristic warrior aristocracy: weapons are relatively few and are largely undefensive, and there is little evidence of large-scale warfare. The Great Granary and the standardised system point to a managed surplus economy. Society was clearly stratified (the differing sizes and amenities of houses show this) but the absence of conspicuous royal display marks the IVC out from contemporary Egypt and Mesopotamia.

Burial practices

Harappan burials usually involved interring the dead in a north-south oriented pit, often with grave goods (pots, ornaments, occasionally copper objects), which points to some belief in an afterlife but not to lavish royal tombs. Cemetery R-37 at Harappa is the best-known burial ground. Variations occur: Lothal has reported double (paired) burials, Kalibangan has both burials and symbolic (cenotaph) graves, and Surkotada has a pot (urn) burial in an oval grave. There is no convincing evidence of widespread cremation in the mature phase, and pyramids or monumental tombs are entirely absent.

Art and crafts

Harappan art, though small in scale, is technically accomplished:

• The bronze "Dancing Girl" from Mohenjodaro, cast by the lost-wax (cire perdue) method, is the most celebrated metal figure.
• The steatite bust of the bearded "Priest-King" from Mohenjodaro, with the trefoil-patterned shawl.
• Red sandstone and grey stone torsos from Harappa.
• Terracotta figurines (the Mother Goddess type), painted pottery, faience and carnelian beads, and toy carts (including bullock carts), spinning whorls, and dice (the Harappans played a board game).
• Red ware pottery painted with black designs (pipal leaves, fish-scale, intersecting circles) is the typical pottery.

Religion

There were no monumental temples or identifiable images of organised worship, so religion is reconstructed from seals and figurines. Likely features:

• Worship of a Mother Goddess (numerous terracotta female figurines), linked to fertility.
• A male deity often called the "Proto-Shiva" or Pashupati, shown on a seal seated in a yogic posture, three-faced, surrounded by animals (elephant, tiger, rhinoceros, buffalo).
• Worship of nature: trees (especially the pipal), animals (the humped bull and the mythical unicorn), and possibly the phallic (lingam) and yoni symbols.
• No firm evidence of fire altars at most sites, although fire altars are reported at Kalibangan and Lothal.

Decline

The mature urban phase ended around 1900 BCE, not abruptly everywhere but over a few centuries, with cities decaying, trade contracting, and uniformity breaking down. There is no single agreed cause; historians treat it as multi-causal. Proposed factors include:

• Hydrological change: the drying or shifting of rivers, especially the Ghaggar-Hakra, and a possible eastward shift of the monsoon.
• Recurrent floods or, conversely, prolonged drought and aridity (climate change).
• Ecological degradation: deforestation, over-grazing, salinity, and soil exhaustion from intensive brick-firing and farming.
• Decline of long-distance trade with Mesopotamia.

The older "Aryan invasion" theory, which read Mortimer Wheeler's unburied skeletons at Mohenjodaro as massacre victims, is now largely discounted as the cause of the collapse. The civilisation did not vanish but transformed gradually into the Late Harappan and successor cultures.

Sources and excavators

Because the script is unread, the IVC is known almost entirely from archaeology. The key figures and sites the examiner reuses:

• Sir John Marshall: Director-General of the ASI who announced the civilisation in 1924.
• Daya Ram Sahni: excavated Harappa (1921).
• Rakhal Das (R. D.) Banerji: excavated Mohenjodaro (1922).
• Sir Mortimer Wheeler: later excavator who advanced (and whose evidence was later used to support, then discard) the "Aryan invasion" reading of the unburied skeletons.
• N. G. Majumdar, Madho Sarup Vats, S. R. Rao (Lothal), B. B. Lal and B. K. Thapar (Kalibangan), J. P. Joshi and R. S. Bisht (Dholavira and Banawali): notable later Indian excavators.

Static facts to memorise

Sites and findings (high-yield matching table)

Discovery and dating

Technical and economic facts

Signature objects and where they are from

How CAPF asks it

CAPF uses single-correct and matching formats, almost no chronology beyond the broad date band. Common formats: match site to river or to unique finding; identify the discoverer or year; identify the metal not known (iron); statement-based questions on drainage, brick ratio, or the absence of temples and a deciphered script.

Authored practice (with answers):

1. Which Harappan site is the only major city found without a citadel? (a) Harappa (b) Kalibangan (c) Chanhudaro (d) Lothal. Answer: (c). Chanhudaro, a bead-making centre in Sindh, lacks a fortified citadel.

2. The brick ratio used in Harappan construction was: (a) 1:2:3 (b) 4:2:1 (c) 2:1:1 (d) 3:2:1. Answer: (b). Kiln-burnt bricks were made in the standard 4:2:1 proportion across sites.

3. Which of the following metals was NOT known to the Harappans? (a) Copper (b) Bronze (c) Gold (d) Iron. Answer: (d). Iron was unknown; the IVC is a Bronze Age culture.

4. Match: (i) Lothal (ii) Kalibangan (iii) Dholavira (iv) Mohenjodaro with (1) Great Bath (2) ploughed field (3) dockyard (4) water reservoirs. Answer: i-3, ii-2, iii-4, iv-1. Each is the signature finding of its site.

5. The westernmost and easternmost sites of the IVC, respectively, are: (a) Sutkagendor and Alamgirpur (b) Manda and Daimabad (c) Lothal and Harappa (d) Daimabad and Manda. Answer: (a). Sutkagendor (Makran coast) is westernmost; Alamgirpur (UP) is easternmost.

6. The Mesopotamian records refer to the Harappan land as: (a) Dilmun (b) Magan (c) Meluha (d) Sindon. Answer: (c). Meluha was the Mesopotamian name for the Harappan region; Dilmun (Bahrain) and Magan (Oman) were the intermediaries.

7. Which statement about the Harappan economy is correct? (a) They used iron tools (b) They minted gold coins (c) They were the first to produce cotton (d) They had no external trade. Answer: (c). The Harappans were the first in the world to grow and use cotton; they had no coins and no iron.

Common confusion

• Discoverers: Harappa by Daya Ram Sahni (1921); Mohenjodaro by R. D. Banerji (1922). Both under John Marshall. Do not swap the names.
• Great Bath versus Great Granary: both at Mohenjodaro; the Great Granary is the largest structure, the Great Bath is the famous tank.
• Dockyard (Lothal) versus reservoirs (Dholavira): both Gujarat sites, both water-related, but Lothal has the dockyard and Dholavira the reservoirs and signboard.
• Largest site overall (Mohenjodaro) versus largest in India (Rakhigarhi).
• "Meluha" is the Mesopotamian name for the Harappan land; Dilmun is Bahrain and Magan is Oman, the intermediaries.
• Horse: generally absent. Reported bones at Surkotada are disputed; do not treat the horse as a Harappan domesticate.

Memory hook

• Four corners, clockwise from the west: "South Daimabad, west Sutkagendor, north Manda, east Alamgirpur." Mnemonic for extremities: SAMD (Sutkagendor west, Alamgirpur east, Manda north, Daimabad south).
• Gujarat trio: Lothal (dock), Dholavira (reservoirs and signboard), Surkotada (horse bones).
• "No iron, no coins, no temples, no read script" captures four classic IVC negatives.

Night before

• Harappa 1921 (Sahni), Mohenjodaro 1922 (Banerji); both under Sir John Marshall.
• Mature urban phase c. 2600 to 1900 BCE; Bronze Age; no iron.
• Brick ratio 4:2:1; binary weights in multiples of 16; grid plan with citadel plus lower town.
• Most advanced drainage of the ancient world; covered brick street drains.
• Great Bath and Great Granary at Mohenjodaro; dockyard at Lothal; ploughed field and fire altars at Kalibangan; reservoirs at Dholavira.
• Largest site overall Mohenjodaro; largest in India Rakhigarhi.
• Script pictographic, boustrophedon, undeciphered; seals mostly steatite, "unicorn" motif common.
• Bronze Dancing Girl and steatite Priest-King from Mohenjodaro; Mother Goddess and Pashupati (Proto-Shiva) worship.
• Trade with Mesopotamia (Meluha), via Dilmun (Bahrain) and Magan (Oman); barter, no coins.
• Decline c. 1900 BCE, multi-causal; Aryan-invasion-as-cause now discounted.

Glossary

• Bronze Age / Chalcolithic: the metal age in which copper and bronze, but not iron, are in use.
• Citadel: the raised, fortified western mound of a Harappan city, holding public structures.
• Lower town: the larger, eastern residential area laid out on the grid.
• Boustrophedon: a writing direction that alternates line by line, right to left then left to right.
• Steatite: soapstone, the soft stone from which most Harappan seals were carved.
• Cire perdue (lost-wax): the bronze-casting technique used for the Dancing Girl.
• Meluha: the Mesopotamian (Sumerian) name for the Harappan land.
• Dilmun and Magan: Bahrain and Oman, the intermediary trading regions of the Gulf.
• Faience: a glazed quartz-paste material used for beads and small objects.
• Pashupati seal: a seal depicting a horned, yogic male figure, the so-called Proto-Shiva.
• Cemetery R-37 / Cemetery H: burial grounds at Harappa, the latter a Late Harappan culture.
• Sindon: the Greek word for cotton, derived from Sindh.

Related notes

• vedic age
• mahajanapadas jainism and buddhism
• mauryan empire
• Index
• syllabus index