Harappan Civilization: Sites, Society, and Decline Explained

The Harappan civilization, also called the Indus Valley Civilization (IVC), was a Bronze Age urban culture that flourished across the north-western Indian subcontinent from about 3300 to 1300 BCE, with its mature urban phase between 2600 and 1900 BCE. Named after the site of Harappa in present-day Punjab, Pakistan, it was one of the four earliest river-valley civilizations along with Mesopotamia, Egypt, and China. Known for planned cities, sophisticated drainage, standardised weights, and a still-undeciphered script, the Harappan civilization is foundational for UPSC Ancient History. This guide covers chronology, sites, society, economy, religion, and its decline.

Discovery and Chronology

The existence of a pre-Aryan urban civilization was confirmed when the Archaeological Survey of India (ASI) announced discoveries in the 1920s.

• 1921: Dayaram Sahni excavated Harappa on the Ravi River (now in Pakistan).
• 1922: R. D. Banerji excavated Mohenjo-daro on the Indus in Sindh.
• The announcement was made by Sir John Marshall, ASI Director-General, in 1924.

Chronological phases (widely used):

Geographical Extent

The civilization covered over 1.25 million sq km, making it the largest of its era in the ancient world. Sites have been discovered across Pakistan and north-western India, along the Indus, Ghaggar-Hakra (Saraswati) and Sutlej systems.

• Northernmost site: Manda (Jammu) on the Chenab.
• Southernmost site: Daimabad (Maharashtra) on the Pravara.
• Easternmost site: Alamgirpur (UP) on the Hindon.
• Westernmost site: Sutkagendor (Balochistan) on the Dasht.

Major Sites and Key Finds

• Dholavira was inscribed as a UNESCO World Heritage Site in 2021, becoming India's 40th World Heritage Site.
• Rakhigarhi, often cited as the largest Harappan site in India, has yielded significant DNA evidence pointing to a Harappan genetic continuity with modern South Asians.

Town Planning

Harappan cities show remarkable uniformity, reflecting strong civic organisation.

• Grid pattern streets meeting at right angles.
• Cities divided into a fortified citadel (west) and a lower town (east).
• Baked brick constructions with standard ratio 1 : 2 : 4.
• Covered drains with manholes along streets — a hallmark of Harappan urbanism.
• Great Bath at Mohenjo-daro – 11.88 × 7.01 m, lined with bitumen for waterproofing.
• Granaries for storing surplus grain.
• Dholavira had three-part divisions – citadel, middle town, lower town – and sophisticated water conservation reservoirs.

Economy and Trade

• Agriculture: wheat, barley, rice (at Lothal and Rangpur), cotton (earliest known use), peas, mustard, sesame.
• Animal domestication: cattle, buffalo, sheep, goat, dog, cat; horse disputed.
• Craft production: beads (carnelian, agate, steatite), shell bangles, pottery, bronze metallurgy.
• Trade: internal and external. Harappan seals found in Mesopotamia; Mesopotamian texts refer to Meluhha, generally identified with the Indus region.
• Lothal's dockyard is evidence of maritime trade.
• Standardised weights in ratios of 1:2:4:8:16 made of chert.

Society, Religion, and Script

Society:

• No clear evidence of kingship or temples.
• Likely ruled by merchant oligarchies or priest-administrators.
• Egalitarian in comparison to contemporary Mesopotamia, though housing differences suggest social stratification.

Religion:

• Mother Goddess figurines widespread.
• Pashupati Seal from Mohenjo-daro shows a seated figure surrounded by animals, often interpreted as a proto-Shiva.
• Fire altars at Kalibangan and Lothal.
• Worship of trees (peepal), animals (bull), and phallic symbols (lingam).
• No large temples have been found.

Script:

• Undeciphered pictographic script with about 400–600 signs.
• Written right to left (boustrophedon in longer texts).
• Found on seals, tablets, and pottery.
• The Dholavira signboard, a ten-sign inscription on wooden planks, is the largest Harappan inscription found.

Art and Artefacts

• Bronze Dancing Girl (Mohenjo-daro) – lost wax casting technique.
• Priest King stone figurine (Mohenjo-daro).
• Terracotta figurines, seals with unicorn motif, painted pottery (red ware with black motifs).
• Beadwork from Chanhudaro and Lothal.
• Toys and games – dice, carts, whistles – indicating a playful, materially rich culture.

Burial Practices

• Mostly extended burial with head north.
• Cemetery R-37 at Harappa is a major burial site.
• Coffin burials at Harappa are unique.
• Pot burials and twin burials at Lothal.
• Little elaborate tomb architecture — consistent with egalitarian features.

Decline of the Harappan Civilization

By 1900 BCE, mature Harappan cities began to decline. Multiple theories exist; no single one is universally accepted.

• Aridification and shifting monsoon drying up the Ghaggar-Hakra (Saraswati) river.
• Tectonic activity and floods (Mohenjo-daro shows flood deposits).
• Ecological degradation from overgrazing and deforestation.
• Trade collapse with Mesopotamia.
• Decline of civic authority rather than invasion – the Aryan invasion theory is no longer seen as the primary cause.
• Cultural continuity into Late Harappan and post-Harappan / Chalcolithic cultures, blending into later South Asian societies.

Significance and Legacy

• Among the first planned urban civilizations in the world.
• Pioneered urban sanitation unmatched for millennia.
• Demonstrated long-distance trade networks.
• Cultural continuity with later Indian traditions (yoga postures on seals, Pashupati imagery, weights).
• Shows that Indian civilizational roots predate Vedic Aryan culture, reshaping historical narratives.

UPSC Relevance

Prelims focus:

• Dates: Mature phase 2600–1900 BCE.
• Discovery: Harappa 1921 (Sahni), Mohenjo-daro 1922 (Banerji).
• Key sites and their specific finds (Lothal dockyard, Kalibangan fire altars, Dholavira water system).
• Dholavira – UNESCO World Heritage (2021).
• Pashupati seal, Dancing Girl, Great Bath.
• Script: undeciphered, pictographic, right-to-left.

Mains GS angle (GS Paper I – Ancient History; Art & Culture):

• Urban planning and civic organisation of the Harappan cities.
• Nature of Harappan religion and its continuity with later Hinduism.
• Causes of decline and lessons for contemporary sustainability.
• Comparison with contemporary Mesopotamian and Egyptian civilizations.

Sample PYQ angle: UPSC has asked about Harappan town planning, key artefacts, and chronology. Expect questions on specific sites (e.g., which site has a dockyard) and on aspects of Indus religion and economy.